The Advance Auto Parts core charge presented to you online today with your item is representative of the most common core charge. The O2 sensor simulator allows for a complete ECU testing solution, enabling close loop control on the AFR. The bulb is coated on the outside with a porous layer of platinum. Using an oxygen sensor socket, remove oxygen sensor from exhaust pipe. URD Rear O2 Sensor Simulators are carefully calibrated to condition the signal from the rear O2 sensor to keep it in the range the ECU is expecting. DC power supply range extended - 8V to 40V Added a mode to simulate O2 Zirconia Sensor Added a mode to simulate O2 Titania Sensor Added are modes to simulate. O2 sensor spacers Discussion in 'Ford O2 Simulator Mini Cat Cel Fix best oxygen sensor simulator made. o2 Sensor Simulators. Code reader says PO154 (Bank 2 Sensor 1). 10 Pack of Angle Adapters for O2 Spacers This product converts a Straight Spacer or Minicat to a 90 degree Angle Spacer. Shop with confidence. These are needed for all our track and test pipes Applications Include: 96-99 E36 M3 96-00 MZ3   Select. Just jack the front of the car up as high as you can, then use jack stands for front jack spots. org forum > Technical, Maintenance and Modifications > Exhausts. The problem as i see it is this; cats are expensive to replace, illegal to remove and when at. The O2 sensor before the cat isn't affected by removing the cat, but the one after most definitly will tattle on you: Check Engine comes on. if you go for this i would probly get some kind of sealant to make it water tight after it is on a jeep. Missing of catalytic converter indicates polluted exhaust gas to the ECU, therefore check engine light will flash for a while or illuminate all the time, resulting medium level performance at the wheels. 21 plus/minus 0. Connect the wire with the resistor inline to the black wires, resistor goes on the sensor side. Sale Price: $24. O2 Sensor Replaced but Code PO154 keeps coming on. This allows the turbos to spool up a little quicker and frees up restrictions on the exhaust flows. This is for the rear o2 sensor. Automotive Tester. Leave SES Enable checked, but set them to 3. One end will plug into the oxygen sensor and the other end will plug into the vehicles wire loom. Oxygen Sensor Trouble Code Basics. A properly functioning oxygen sensor optimizes the efficiency of your engine and fuel economy while releasing the least emissions possible. The blue and pink wires power the sensor heater and can be left in place unless you are installing a resistor. Engine analyzer Handheld Automotive Diagnostic tool Glow plug Failure Tester. I've run the plain-vanilla generic 4 wire (you only use 3) O2 simulator for several years, and have had no problems until just recently. E It's mearly a bandaid for a clogging cat or failing 02 sensor. O2 Spacer and Isolator Installation & Information. #N#M18 O2 Sensor Spacer Mechanical Simulator 304 Stainless Steel 45mm Long - Pack of 6. Speaking of O2 simulators, the EPA smacked down the company selling those pretty hard years ago. None of this twisted wires and electrical tape crap. I went to AutoZone and got an oil drain plug (part# 050-090. This trick works on most 4 cylinders and some 6 cylinders with dual catalytic converters. Brief introduction: Lambda Oxygen Sensor Extender to make your vehicle working better with HHO system. If you want to buy cheap o2 sensor simulator, choose o2 sensor simulator from banggood. Checked also the PDC relay fuse behind the glove compartment. Remember this only. o2 Sensor Simulators. Rear O2 Sensor Simulators are used in off road/racing vehicles to prevent the check engine light from illuminating and to prevent an ECU code from tripping (P-0420 and/or P-0430) when the catalytic converter(s) are removed for off road/racing use. As a result of regular usage, products like oil and coolants settle inside the oxygen sensors over time. The O2 Simulator simply screws into your existing exhaust pipe using the same thread port where your post cat sensor is located. Exhaust Accessories, such as the MIL-eliminators, Ceramic Catalytic Converters, and the O2 Sensor, will give your Pony that show-winning quality, or just to make it look and sound. Pulse oximetry is a noninvasive method for monitoring a person's oxygen saturation. The big problem is that most micro controllers can't read the mv that the sensor puts out. Retail: $129. It makes a differance if the O2 sensors are in the rear of the converts!. Instructions The cables must not be twisted. An o2 sensor (not Wideband o2) cannot accurately measure HOW rich or HOW lean the exhaust is. Sensors with one wire or three wires use the sensor body as ground Sensors with two wires or four wires are grounded by the wiring harness. If you use the multimeter, you’ll know whether or not the voltage coming to and from the oxygen sensor is within spec. Wrangler P0138 Diagnosis. Oxygen sensor simulator. Connect the electrical wiring to the dummy sensor. im not anywhere near my laptop to double check this but i think you click on engine diag, DTC's and uncheck po137, 138, 140, 141 for bank 1 and po157, 158, 160, 161 for bank 2. The rear O2 sensors are located after the catalytic converters on the mid-pipe. Insert a new dummy O2 sensor and reconnect the electrical plug to the O2 sensor. It is mainly used to simulate the output signal from automotive sensors: frequency, voltage, and O2 sensor signal. To remove 1. Does anyone have any ideas about gettting the CEL to go away, I need to pass emmisions in NH and with the CEL that ain't gonna happen. But if you have your heart set on it, a 12V 25watt or 30 watt light bulb will be your best load simulation since it's a heated element like the heater in the real O2 sensor. Discussion Starter • #1. Either way, I would DEFINITELY connect the O2 sensor with a mechanical CEL fix. The problem is most engine controllers look for and extra wide tooth on. Sometimes when I try to start it it doesn't start and backfires pretty. MIL Eliminators allow exhaust system modifications (High Flow Cats, No Cats, Long Tube Headers, and /or off-road H-Pipes) without tripping a "Check Engine Light" by simulating the Oxygen (O2) sensor signal to the computer. Installation is easy, first disconnect the oxygen sensor and unscrew it. Plug in these o2 simulators in 5 minutes and keep that light off. Connect the electrical wiring to the dummy sensor. txt) or read online for free. Oxygen sensor simulator. My jeep wasn't made in Cali. 3SX Oxygen Sensor Spacer - The CEL Fix! "Alternative" O2 Simulator! One of the more common modifications for a VR4/TwinTurbo is to eliminate the small "pre-cats" - the catalytic converters located just after the turbos. An oxygen sensor that reports a lean fuel mixture, for example, will certainly set off a code. Chevy Compatible O2 Oxygen Sensor Lamba Simulator Emulator Bypass P0420 Delete. Get all the latest information on Events,Sales and Offers. Just when I thought I'd seen all the uses for the 555. Feel free to contact our engineers prior to purchase, if you are unsure about your Car Truck SUV's oxygen sensor type. The Simulator is designed to replace the post-catalyst oxygen sensor after deleting or removing the catalytic converters. 9 lambda sensor. The upstream O2 sensor is critical for the engine to run right. 1986-2002 Ford Mustang 19lb Injectors 4-hole Spray Pattern Bosch Gt 5. Connect the wire with the resistor inline to the black wires, resistor goes on the sensor side. Tech Tipp: Use only for the 2nd oxygen sensor (after catalytic)!. Oxygen sensors are part of the vehicle's emissions control system and it may or may not be legal to replace the O2 sensor with a dummy sensor. 12" FORD front O2 sensor extension (2011-14 Ford Mustang GT 5. and unplugged rear o2 sensors. Jump to Latest Follow 1 - 5 of 5 Posts. But if you have your heart set on it, a 12V 25watt or 30 watt light bulb will be your best load simulation since it's a heated element like the heater in the real O2 sensor. Jump to Latest Follow 1 - 1 of 1 Posts. Jun 13, 2014 at 10:48 AM #8. I started with the long tube headers removed the CATS and then installed an X-Pipe to magnaflow mufflers. Lower the vehicle to the ground and start the engine. 02 & are available in two different models. Note the cigarette lighter plug used for power source. The oxygen sensor simulator as built on a protoboard. How to build Your Own Oxygen Sensor Simulator! The rest of the page shows how to build an oscillating signal generator with just the right frequency and voltage to fool the ECU. This sensor is doing its job and does not need to be replaced. i think what FIRE was saying is have you changed both oxygen sensors, ive got the same engine in my zaf and there are 2 O2 sensors, a front one and there is a rear sensor underneath the car after the cat just before it goes into the middle section of exhaust, Or even better still get them to have a look what the sensors are reading first before replacing it, Often O2 sensor codes are flaged up. If you use your vehicle for off-road racing or you are experienced with. 5 to 3 seconds, which is. For a real rear O2 sensor simulation to work properly. The O2 sensor harnesses are ready to be re-installed on the main engine wiring harness (without the sensor connected), and routed to the "drug bin. Remember this only. OBD-II - On-Board Diagnostic System Information. Brief introduction: Lambda Oxygen Sensor Extender to make your vehicle working better with HHO system. You don't need a lift to get to the second O2 sensor. From the first thimble-type sensors to heated, quick-response sensors required to meet ever more stringent emissions regulations, DENSO has supplied the OE industry with quality components. 999 volts) that the computer uses to calculate AFR. This high-tech, user friendly Oxygen Sensor Tester/Simulator model from General Technologies Corp/Sheffield Research sports a simple interface to perform diagnostic. You likely have another circuit the ECU is looking for and that's the Ox sensor heater circuit. 0 Wideband Oxygen Sensor Installation Guide Controller Operation with the Sensor Tech Edge controllers are designed to operate best at around 13. 06-15 however you can get a rear O2 simulator. The oxygen sensor is an item in a vehicle that gets replaced due to the fault of another component. Afterthoughtsauto. Oxygen Sensor Type Zirconia Sensor and Titania Sensor. Yes, you will get a CEL, but that's it. What is the best way to go when deciding which O2 sensor simulators to use and where could I find them? Thanks Joe:partyon:. 6L Mustang Tech: 2: Saturday at 1:14 PM: Engine Oil Level Sensor: Fox 5. Just because a fault code indicates an oxygen sensor problem, don't just replace the O2 sensor. Locate and unplug the wire loom from the rear most oxygen sensors. (It even says this in the cars service manual) The O2 sim, runs the secondary O2 sensor in an open loop mode. The control module monitors how long it take the sensor to warm up and start sending an adequate signal. I just replaced the O2 sensor on my truck. The O2 sensor is mounted in the exhaust manifold to monitor how much unburned oxygen is in the exhaust. I would contact this guy, he should be able to tell you and makes a simulator for these vehicles. 1 Setting the type of sensor” and “3. I've come across a few cars, where the ECM couldn't figure out the O2 sensor was lieing to it, but for the most part the ECM will turn the Check Engine light on when they go bad. LED light path displays the crossover signals of the Lambda sensor. Eligible for Free Shipping. The O2 sensor simulator only interrupts the O2 feedback circuit to provide the O2 analog signal in a range acceptable to the ECU. i have also heard of people getting some kind of boss that screws into the o2 boss in the exhaust, allowing the o2 sensor to be set back into. Re: O2 sensor simulator for hfc or gutted cats I'm talking about the precats that are hangin off the headers. These are needed for all our track and test pipes Applications Include: 96-99 E36 M3 96-00 MZ3   Select. I have Flowmaster exhaust, single in duel out. I replaced them and added a ground strap from the MS exhaust to the engine. it's a plug that will either connect to the plug of the oxygen sensor you are trying to cut out or can be wired. The engine is a Mercruiser 300 HP IB Gas. Among the products manufactured and sold by Casper's were "oxygen sensor simulators" or "O 2 Sims. I asked a guy at a local parts shop if there was anyway to bypass this O2 sensor, and he said to look for an O2 Eliminator. The oxygen sensors are very important components in a car's exhaust system. Allows for running Electromotive TEC and XDi systems without the engine running. But your plan would work too with the simulator and long tubes!. The O2 simulator is a plug-in replacement for the secondary O2 sensor that will provide the PCM with a signal that emulates a healthy cat for testing and off-road purposes. 7:1 which is the stoichiometric ratio at which gasoline burns most efficiently in air. Find oxygen sensor for sale on bidorbuy. (Many generic interfaces call out the rear O2 sensor’s contribution to fuel trim separately under a heading such as FTB1S2. An o2 sensor (not Wideband o2) cannot accurately measure HOW rich or HOW lean the exhaust is. It makes it so that your secondary o2 sensor see's less airflow (simulating a cat) and you don't throw a cel, I have one and it works like a charm. What is a Lambda sensor? How can I tell if it needs replacing? Where will I find the Lambda sensor? Which type do I need? How do I change the sensor? Where can I buy a replacement sensor? Is it safe to use a non-original sensor in my car? What is a Lambda sensor? A Lambda or Oxygen sensor measures the amount of oxygen in the exhaust system. 3V (though check your specific application). COM web site. Just when I thought I'd seen all the uses for the 555. 00) and tap them out to fit the o2 and it lifts the sensor out of the stream accomplishing the same thing, for tho's who are not so electrically inclined this may be an. Does anyone at all know of anyplace where I can get some o2 sensor simulator's or eliminator's or whatever there called? I have a 2003 F150 with a 5. Discussion Starter • #1. The cel bulb was burned out so I replaced it and it showed a p0138. You can keep the CEL from coming ono for the rear O2 sensor. 0L Sensor 1996 4Pcs Oxygen Explorer. im not anywhere near my laptop to double check this but i think you click on engine diag, DTC's and uncheck po137, 138, 140, 141 for bank 1 and po157, 158, 160, 161 for bank 2. It is mainly used to simulate the output signal from automotive sensors: frequency, voltage, and O2 sensor signal. The oxygen sensor is sensitive to impacts and jolting and must be handled with care. In addition, the sensitivity of the oxygen sensor is also reduced allowing you to run a nearly any exhaust or catalytic set up, including bypass pipes, without the need to reprogram your ECU! This Mini Catalysator simply is screwed on to your existing O2 sensor. I dont know if this will mess the computer up or not. It makes it so that your secondary o2 sensor see's less airflow (simulating a cat) and you don't throw a cel, I have one and it works like a charm. I've read before on the website I linked on how to make one but I can't remember how to and the site is down. If your off-road vehicle or smog exempt vehicle has it's secondary 02 failing you can also use this method to completely eliminate the sensor all together. For Ford Mustang O2 Sensor Delete Signal Simulator Cheat 96-04 Gt. 4 and I wanna cut my back pair of converters off and i need some simulator's so i wont have a check engine light on all the time. It has a wide measurement range, allowing it to be used to study human and cellular respiration. I just installed New exhaust on my 98 C5 Convert. If you need a second bung post-turbo, I would probably add a second bung to the DP (for a cost of $20, tops). Only 8 left in stock - order soon. View Details. ECM (Engine Control and Monitoring) develops, manufactures, and sells test instrumentation and control systems for vehicle powertrains, engines, and combustion systems. Check Engine Light O2 Sensor Adapter Spacer Catalytic Converter. Hot Sale Spiderce2 All Purpose Catalyst Emulator Oxygen Sensor Simulator. Similar to vfaq's tutorial I will show you how to create a rear o2 bypass/simulator using parts available from your local radio shack. Recommended Upgrades for 2007 HD Twin Cam engine. It is possible to diagnose the P0138 with a multimeter. Jump to Latest Follow 1 - 2 of 2 Posts. Joined Apr 22, 2011 · 9 Posts. 2006 Lexus GX 470 Sport - RR Diff Lock, Metal Tech Sliders, RCI Aluminum Skids, Front Runner Slimline II Rack, SCS F5s, 255/80R17 ST Maxx , OME BP-51s, Dirt King UCAs, Metal Tech RR Lower Links. RockAuto ships auto parts and body parts from over 300 manufacturers to customers' doors worldwide, all at warehouse prices. 25 thread pitch bolt on the headers and relocate the sensors and add the O2 simulator. The control module monitors how long it take the sensor to warm up and start sending an adequate signal. I'm wondering if there is a solution which doesn't actually delete the check engine light, but actually prevents it. None of this twisted wires and electrical tape crap. If you want to buy cheap o2 sensor simulator, choose o2 sensor simulator from banggood. Map sensor measures the manifold vacuum pressure which is what controls the fuel mix when tied with the throttle postion sensor - its a three dimensional map tp sensor vs map sensor air temp sensor in the airbox - it is when one of these variables is held constant that the O2 sensors is used, TP constant input for so many seconds loops in the. Joined Sep 3, 2013 · 27 Posts. Has anyone found a company that makes a 02 sensor eliminator/ simulator for the rear 02's on a 2008 5. The trouble is, the rear o2 monitors the exhaust content and the PCM can determine if the catalyst if performing or not. An MIL Eliminator, also known as a Malfunction Indicator Light eliminator or oxygen sensor simulator, is a small wiring harness with a plug on each end that plugs in between your oxygen sensor and body wiring harness. ECM is the world's largest producer of ceramic sensor-based engine and combustion. Automotive Circuit Repair Detector Sensor Signal Simulator Tool Set. Mustang Exhaust Accessories Once you've got your exhaust assembled just the way you want it on your Mustang, there are some Exhaust Accessories you'll want to add. Chevy Compatible. 0 and Shelby ONLY) When installing aftermarket headers and cat-back systems in your vehicle, the oxygen sensor is fre. Can anyone tell me which type o2 sensor connector our post cat o2s are on this chart? I am trying to order a set of simulators so I can stop throwing this check engine light! Show Full Signature. #N#M18 O2 Sensor Spacer Mechanical Simulator 304 Stainless Steel 45mm Long - Pack of 6. O2 sensor simulator OBD-II cars (1996 - present) have the two O2 sensors to measure the amount of oxygen in the exhaust gas. It is true that it could damage the cat by making it get too hot if it’s not sensing correctly. I need some advice. 5 to 3 seconds, which is. For non catted downpipes you will throw a p0137 rich/ lean or whatever. The function of the Oxygen Sensor Simulator or O2 Sim is to mimic the signal of an O2 sensor sensing the proper levels of emissions. DC power supply range extended - 8V to 40V Added a mode to simulate O2 Zirconia Sensor Added a mode to simulate O2 Titania Sensor Added are modes to simulate. LED light path displays the crossover signals of the Lambda sensor. Price $ 119. The AutoSim Pro is a specialized signal generator that will simulate sensors and actuators on 12-volt systems used in both cars and trucks. Allows for running Electromotive TEC and XDi systems without the engine running. 8)I took the rear O2 sensor and carefully cut the protective wire cover. The primary use of the spacer and or isolator is to take your O2 sensor out of the exhaust stream so that your O2 sensor senses less oxygen in the exhaust pipe. Note the cigarette lighter plug used for power source. I put headers on and a custom side exit exhaust. What is the best way to go when deciding which O2 sensor simulators to use and where could I find them? Thanks Joe:partyon:. Has anyone found a company that makes a 02 sensor eliminator/ simulator for the rear 02's on a 2008 5. The 02 sensor can be considered a small batery that has an operating range of 0 to 1 volt when fully warmed up to 600F. Taking your car to a mechanic to fix the issue can cost up to $200. Has anyone used Magnum Tuning o2 sensor simulators? I have no cats, Ms exhaust, and the car runs and sounds amazing above 3200 rpms. If you google DIY O2 simulator, a wealth of info is available on how-to do just that. ECM (Engine Control and Monitoring) develops, manufactures, and sells test instrumentation and control systems for vehicle powertrains, engines, and combustion systems. Hypothetically, I do suppose an O2 Simulator might do the trick, in a strictly academic sort of way. 999 volts) that the computer uses to calculate AFR. P0420 Oxygen Sensor Simulator Hack (cheap, easy, and not a spacer/mini cat) Similar Threads. Tips or answers would be GREATLY appreciated. Oxygen Sensor Simulator Question Hey guys, me and a friend are currently working on developing a post-cat oxygen sensor simulator for use on cars with race catalytic converters or no cats at all and had a question. This is beneficial for calibrating the XDi’s manual potentiometers, as well as general system testing on any unit. Pre-Cat Oxygen Sensor, Bosch - E9X 325/330, E9X M3, E60 525/530 (11787537984) 325/330/525/530: -11/2005. 90 Degree O2 Oxygen Sensor Socket Real Mini Catalytic Converter With CEL Check Engine Light Bungs,Stainless Steel. The signal from the O2 sensor tells the computer if the fuel mixture is burning rich (less oxygen) or lean (more oxygen). The function of the Oxygen Sensor Simulator or O2 Sim is to mimic the signal of an O2 sensor sensing the proper levels of emissions. 25 thread pitch bolt on the headers and relocate the sensors and add the O2 simulator. 4 volt and a rich mixture producing in. Oxygen Sensor Simulators. 6 Svt For Ford - $18. Heres a DIY link. The O2 sensor acts as a small battery as it has the ability to produce a low voltage signal (between 0. 09 volts DC every 3. Signal generator Generate sine, square. 2D25 - bank 1 - oxygen sensor before catalytic converter, line fault: Open circuit, pump current lead The diagnostic function monitors the voltage of the oxygen sensor before the catalytic converter. Universal Oxygen Sensor Tester Simulator by General Technologies®. 7:1 which is the stoichiometric ratio at which gasoline burns most efficiently in air. Cars with multiple O2 sensors: Starting around 1994, and definitely by 1996, all cars have multiple O2 sensors. Hi, I just got 2 errors pop up in the Polaris Digital Display unit. Oxygen sensor issues - 2001 Suburban. I am getting check engine light on my 04 Cayenne-S 70000miles currently after couple times clearing the code. The PCM calculates the difference between the two and establishes an air / fuel formula based on initial programming for "optimum" air / fuel ratio in the PCM. Mike confirmed that JB4 was not a true O2 simulator either. But I'm having an issue with the O2 sensor. Home Pontiac Grand Prix Oxygen Sensor 2002. Shop with confidence. Bought these for, my 2011 Charger srt8 I did swapped out the cam heads headers etc. Toyota Compatible O2 Oxygen Sensor Lamba Simulator Emulator Bypass P0420 Delete. No simulator or spacer for me with no CEL, and I'm catless. It went on to say exhaust oxygen sensor not working properly - emission control problem see your dealer soon. And this is only 0-1 VDC. Sensors, injector actuators will inform the scan tools that there is a problem, but Sensor simulator will allow the technician to know if the faulty operation is a faulty sensor a problem in the car computer, a defect in the wiring… The device is specially used for wiring tests. i think what FIRE was saying is have you changed both oxygen sensors, ive got the same engine in my zaf and there are 2 O2 sensors, a front one and there is a rear sensor underneath the car after the cat just before it goes into the middle section of exhaust, Or even better still get them to have a look what the sensors are reading first before replacing it, Often O2 sensor codes are flaged up. 5mm thread For 50 pieces only $13. You put the anti fouler on the O2 sensor after the cat right? Oh, by the way, these aren't O2 simulators. It is a feedback sensor used by the Engine Control Module (ECM) to perform closed loop control of engine fueling and, if a post catalytic converter sensor is present, monitor catalytic converter function. Insert a new dummy O2 sensor and reconnect the electrical plug to the O2 sensor. 9 lambda sensor. A properly running simulator will generate an oscillation of 1-2Hz at 0. 2007 STi Rear Oxygen Sensor ( O2 Sensor ) Nitro Don: Engine/Power/Exhaust: 3: 02-19-2009 11:49 AM: 2007 STI Front Oxygen Sensor ( O2 Sensor ) Nitro Don: Engine/Power/Exhaust: 0: 02-13-2009 02:16 PM: oxygen sensor vs air/fuel sensor: paintbing: Factory 2. O2 sensor simulators are designed to replace the post-catalyst sensors after "deleting" the catalytic converter(s). ­Th­e oxygen sensor is positioned in the exhaust pipe and can detect rich and lean mixtures. txt) or read online for free. If you need a second bung post-turbo, I would probably add a second bung to the DP (for a cost of $20, tops). I played with opamps, but never got it to work prope. if you dont want to go the sim route you can always take spark plug non foulers (cost $3. Twisted cables exposed to vibration can break. 108 results for o2 sensor simulator Save o2 sensor simulator to get e-mail alerts and updates on your eBay Feed. If the voltage is high (approx. A Mechanic's labor rates range from $50-$150 an hour, and replacing an oxygen sensor is a very. The desire to simulate an o2 sensor begins with the desire to remove the catalytic converters to allow free’er exhaust flow. 3 liter Vortec engine in it. The actual O2 sensor is $53 at FCP Groton which seems like an easier solution that building a simulator. Automotive Circuit Repair Maintenance Detector Sensor Signal. Jump to Latest Follow 1 - 5 of 5 Posts. Some combination of the new ECU, new tune, or something isn't letting the catalyst testing complete successfully, thinks the O2 is stuck lean, even though I can monitor it and it's sending signals as it should. It can also command PWM components up to 4. Anyway, One topic I have not seen raised is that of oxygen sensor simulators. My R&D Progress, experiment, experience and me, in real life Monday, March 5, 2012. 5 O2 Oxygen Sensor Angle Extender Spacer Adapter Car Accessories. 4 is an air/fuel sensor and is not the same as the rear O2 sensorthe front one also costs about twice as much, so I don't think they are interchangeable. It has a wide measurement range, allowing it to be used to study human and cellular respiration. A set voltage would not work. Chevy Compatible. came on after I run about 25 mi. O2 Oxygen Sensor Lamba Heater Circuit Simulator Emulator Bypass For Off Road Use. 0L Sensor 1996 4Pcs Oxygen Explorer. Brief introduction: Lambda Oxygen Sensor Extender to make your vehicle working better with HHO system. 90 Degree O2 Oxygen Sensor Socket Real Mini Catalytic Converter With CEL Check Engine Light Bungs,Stainless Steel. The headers had a place for the front sensors but there is no place for the rears and I don't want to attempt drilling in my custom exhaust possibly destroying it or causing a leak. Page 1 of 3: Testing the Oxygen Sensors on Your Ford 4. Wait for the check engine light to come on. The O2 Simulators can only take the place of the rear oxygen sensors. Universal fitment - M18 x 1. You can keep the CEL from coming ono for the rear O2 sensor. P0420 Oxygen Sensor Simulator Hack (cheap, easy, and not a spacer/mini cat) Similar Threads. CNC machined from cold roll steel and TIG welded, our proven design offers fitment flexibilty in tight spaces. 5 Oxygen Sensor Fitting Bung Defouler Straight O2 Oxygen Sensor Restrictor Fitting. I think there vibrant brand, all they do is space out the o2 sensor away from the exhaust there for giving it a leaner reading. Though, this depends on the type of car and the rates of the mechanic. These are needed for all our track and test pipes Applications Include: 96-99 E36 M3 96-00 MZ3   Select. The ultimate solution is to wire up O2 sensor simulator to the air fuel sensor’s harness to simulate the oxygen sensor. The oxygen sensor is sensitive to impacts and jolting and must be handled with care. 25 thread pitch bolt on the headers and relocate the sensors and add the O2 simulator. Simulated Wideband Oxygen Sensor A typical narrow band oxygen sensor is only good for telling whether or not you Air Fuel Ratio is at 14. So if the computer fried after installing the O2 sensor, there may have been a problem with the heater in the O2 sensor itself. (Many generic interfaces call out the rear O2 sensor’s contribution to fuel trim separately under a heading such as FTB1S2. If you were to put a spacer, it would be the second O2 sensor (the one closest to the test pipe). From what I understand the voltage varies off the O2 sensor and the PCM is smart enough to pick up on the fact that the simulator has a fixed voltage. Again I cant remember how many it has. P0135 DODGE Tech Notes The code means that there is a problem with the heater element circuit of the heated oxygen sensor. We specialize in a wide-variety of high-quality car parts and accessories for your car, truck or SUV. I threw around four codes choosing to run with out a rear o2 sensor for 5 months after installing my downpipe (heater, o2 short, ext). 6 Svt For Ford - $18. are these O2 Sensor Simulator any good Universal Oxygen O2 Sensor Simulator V2 w/ Heater Sim on eBay. 1 of 16 Go to page. This high-tech, user friendly Oxygen Sensor Tester/Simulator model ST05 from General Technologies Corp/Sheffield Research sports a simple interface to perform diagnostic tests and measurements on any Oxygen Sensor and to quickly determine whether or not an Oxygen Sensor is actually defective and in need of replacement. P0135 DODGE Tech Notes The code means that there is a problem with the heater element circuit of the heated oxygen sensor. So if the computer fried after installing the O2 sensor, there may have been a problem with the heater in the O2 sensor itself. Remove the oxygen sensor from the vehicle by turning it counterclockwise with an O2 sensor removal tool. An extremely compact circuit board (. 2 PCS O2 Sensor Spacer Adapter 180 Degree Extender with M18 x 1. o2 Sensor Simulators. The ST05 Oxygen Sensor Tester and Simulator is an easy-to-use tool for testing and diagnosing problems with any oxygen sensor (also known as lambda sensors). Pre-Cat Oxygen Sensor, Bosch - E9X 325/330, E9X M3, E60 525/530 (11787537984) 325/330/525/530: -11/2005. For most vehicles, you will need to clear the stored fault codes with an obd2 scanner check engine light turn off. 0 Volt fluctuating voltage range. The warning system went off on the gauge: system fault 48 - fuel system. I saw something about a O2 Sensor Simulator from Magnumanyone know anything. The vehicle had come from another shop, which had already replaced the oxygen sensor. For Ford Mustang O2 Sensor Delete Signal Simulator Cheat 96-04 Gt. I have seen the ones that wire into the O2 sensor and send the signal to the ECU and I have also seen a spacer that goes in the O2 sensor spot and helps to make it pass emissions. The actual O2 sensor is $53 at FCP Groton which seems like an easier solution that building a simulator. In these instances the removal of the plastic locating tab is required. We believe this is the most intelligent oxygen sensor simulator available, that's why we named it the iO2. The mechanism in most sensors involves a chemical reaction that generates a voltage (see the patents below for details). 5:1 which is a richer. As said above you can install a O2 simulator. Pulse oximetry is a noninvasive method for monitoring a person's oxygen saturation. I put headers on and a custom side exit exhaust. Chevy Compatible O2 Oxygen Sensor Lamba Simulator Emulator Bypass P0420 Delete. It can also command PWM components up to 4. Get the best deals for o2 sensor simulator at eBay. Has anyone used any of the o2 sensor simulators --- post cat to eliminate CEL? I removed my cats and want to install the angled o2 simulators so I will not get a CEL. Yes, you will get a CEL, but that's it. By BlueGTIguy in forum 2. Joined Aug 13, 2004 · 7 Posts. If you are having trouble adjusting the mixture on your car to proper levels, there is a high chance that you may have a faulty oxygen sensor. First sensor is measuring it right after gases escape engine and this data is used to adjust fuel trim of the engine, as well as catch some faulty conditions. Oxygen Sensor Tester Simulator Add290 Test And Simulate Any Oxygen Sensor. Retail: $100. 6L For Upstream 2005 2005 4. If a failing or dead sensor is the issue, there are several OBDII codes in particular that will be set off (more on this in the following section). 5's on 15x10 beadlocks, OBA, winch, and a few. Wiring is one of the more confusing and tedious parts of our hobby, especially with today's vehicles, and the seemingly miles of wire! Caspers Electronics makes a number of wiring add-on harnesses, adapters and pig-tails to take the guess work and time out of installing things like in-line fuel pumps. Mine tend to produce 850 milivolts at cruise and 15 milivolts on long decel. 1) Step four: Build the O2 simulator. Magnum EZ CEL Fix Oxygen sensor simulator is available to all cars, trucks and SUV's fitted with 1 up to 4-wire narrowband zirconia exhaust oxygen sensors working in the standard 0 up to 1. Jump to Latest Follow 1 - 6 of 6 Posts. Sign up for newsletter today. 7 but the front sensor on my 3. Map sensor measures the manifold vacuum pressure which is what controls the fuel mix when tied with the throttle postion sensor - its a three dimensional map tp sensor vs map sensor air temp sensor in the airbox - it is when one of these variables is held constant that the O2 sensors is used, TP constant input for so many seconds loops in the. Insert a new dummy O2 sensor and reconnect the electrical plug to the O2 sensor. O2 sensor simulators are designed to replace the post-catalyst sensors after "deleting" the catalytic converter(s). Oxygen Sensor Simulators. This location is pre-catalyst and typically on the right bank of a v6 or v8 engine or near the front of a dual banked 4 cylinder (eg: Rav). Has anyone used Magnum Tuning o2 sensor simulators? I have no cats, Ms exhaust, and the car runs and sounds amazing above 3200 rpms. 5 to 3 seconds, which is. #N#M18 O2 Sensor Spacer Mechanical Simulator 304 Stainless Steel 45mm Long - Pack of 10. Jump to Latest Follow 1 - 7 of 7 Posts I could be wrong cause I have no short term memory but I thought there was only 3 wires to the O2 sensor. The O2 simulator sends a signal to the ECU just like a properly-operating stock O2 sensor would, ensuring that the check engine light stays off. When the O2 sensor is cold, it produces NO voltage output. It can also command PWM components up to 4. Parts needed: 1 - Mohm resistor 3 - 50ohm/10watt resistors 1 - 1µF capacitor (It is possible to use other variations than the 50ohm/10watt resistors I have chosen, like I said this is what was available. You are actually modifying your existing o2 sensor by putting capacitor and resistor inline, similar to the universal ones sold on ebay for 15+ dollars, except this only cost about 3 dollars or. Good Luck, -Marc M. An extremely compact circuit board (. In case of a single oxygen sensor or dual pipe exhaust system fitted with two lambda sensors only, the oxygen sensor simulator taps to these ports. It then relays this information to the ECU to adjust the fuel mixture. Oxygen Sensor Simulators. Plug in these o2 simulators in 5 minutes and keep that light off. The secondary O2 sensor can just be left out and you can plug the hole if you like. the sputtering is caused by the ecu not implementing the right mixture. O2 Sensor Replaced but Code PO154 keeps coming on. The O2 sensor produces it's own voltage signal to the computer. 3? I've looked in all the usual spots, but come up empty handed every time. NE555 Oxygen Sensor Simulator. from activating. Find great deals on eBay for o2 simulator and o2 sensor spacer. anybody please correct me if i'm wrong. Joined: 09 Jun 2007 Posts: 266 Location: tucson, 97 4x4 3/4 ton, 383 170 e-tec heads, 4l80e, 14 bolt diff. The problem as i see it is this; cats are expensive to replace, illegal to remove and when at. The Simulator is designed to replace the post-catalyst oxygen sensor after deleting or removing the catalytic converters. I put the car on lift an. I'm guessing the same is true with your 2. Part Type: Oxygen Sensor Simulators Part Number: BBK-1675 Oxygen Sensor Simulator Plug Style: 4-pin round Quantity: Sold as a pair. One end will plug into the oxygen sensor and the other end will plug into the vehicles wire loom. 25" with a 10 LED display 7/16" tall. Signal Fault. Locate and unplug the wire loom from the rear most oxygen sensors. Please read Notes!. It tricks your Mustang into thinking your oxygen sensors are reading correct oxygen. M18 O2 Sensor Spacer Mechanical Simulator 304 Stainless Steel 45mm Long - Pack of 2. Checked also the PDC relay fuse behind the glove compartment. Well i don't need new o2 sensors. Its throwing codes for cam position sensor, throttle position sensor, lean bank 2, and MAF. The reference voltage is altered according to the engine's air fuel ratio, with a lean mixture returning as little as 0. and unplugged rear o2 sensors. The o2 simulator site that jmlock put up has the simulators for $25, and it takes care of both sensors with just one simulator. Has anyone found a company that makes a 02 sensor eliminator/ simulator for the rear 02's on a 2008 5. I never installed them. It went on to say exhaust oxygen sensor not working properly - emission control problem see your dealer soon. Has anybody had this problem? or would anybody know of a way to maybe combine the heater on the o2 sensor with the simulator?. EASE OBD II Simulator / Verification Tester. 25 thread pitch bolt on the headers and relocate the sensors and add the O2 simulator. The adjustment knob is at the. Remember this only. The function of the Oxygen Sensor Simulator or O2 Sim is to mimic the signal of an O2 sensor sensing the proper levels of emissions. It features two fully independent outputs and adjustable voltage output from 0 to ±12 volts (10 mV step). Turn off that annoying check engine light! These BBK MIL eliminators are for use with all high-flow, off-road H and X pipes. An extremely compact circuit board (. M18 O2 Sensor Spacer Mechanical Simulator 304 Stainless Steel 45mm Long - Pack of 2. 1; 2; 3 … Go to page. 999 volts) that the computer uses to calculate AFR. The AutoSim Pro is a specialized signal generator that will simulate sensors and actuators on 12-volt systems used in both cars and trucks. The mechanism in most sensors involves a chemical reaction that generates a voltage (see the patents below for details). Climb under and rent an O2 socket set from Autozone. The 02 sensor can be considered a small batery that has an operating range of 0 to 1 volt when fully warmed up to 600F. Oxygen Sensor Simulator Schematic - Free download as Word Doc (. 3SX Oxygen Sensor Spacer - The CEL Fix! "Alternative" O2 Simulator! One of the more common modifications for a VR4/TwinTurbo is to eliminate the small "pre-cats" - the catalytic converters located just after the turbos. An o2 sensor (not Wideband o2) cannot accurately measure HOW rich or HOW lean the exhaust is. The O2 Sensor Simulator, is a simple piece of equipment that mimics the output signal of an O2 sensor. The ST05 is compatible with all types of oxygen sensors: Zirconia, Titania 1 volt, Titania 5. Just jack the front of the car up as high as you can, then use jack stands for front jack spots. O2 Simulator Dodge Challenger Charger High Performance Cel Fix. If the catalyst is removed, the PCM usually starts reporting P0420,p0430 faults for catalyst efficiency. First I wired up the o2 simulator to the + and - signal wires. I've come across a few cars, where the ECM couldn't figure out the O2 sensor was lieing to it, but for the most part the ECM will turn the Check Engine light on when they go bad. A properly running simulator will generate an oscillation of 1-2Hz at 0. Put in the right jet and the sensor will read correctly without throwing a code. Voltage produced by the O2 sensor depends on the amount of oxygen in the exhaust. 999 volts) that the computer uses to calculate AFR. Thanks, Izzy. 5 O2 Oxygen Sensor Extender Spacer Bung Adapter. Insert a new dummy O2 sensor and reconnect the electrical plug to the O2 sensor. 1; 2; 3 … Go to page. I need some advice. 5 Thread) Also, if you are running a Diesel DPF delete pipe and your O2 sensor is throwing a check engine light then you can use one of these. LED light path displays the crossover signals of the Lambda sensor. Sensors with one wire or three wires use the sensor body as ground Sensors with two wires or four wires are grounded by the wiring harness. When the O2 sensor is cold, it produces NO voltage output. Universal fitment - M18 x 1. Installation is easy, first disconnect the oxygen sensor and unscrew it. 06-15-2008 #7. O2 Oxygen Sensor Lamba Heater Circuit Simulator Emulator Bypass For Off Road Use. Jump to page: Results 1 to 25 of 50. Yes, you will get a CEL, but that's it. First one: P0030: Oxygen Sensor Heater 1 (pre) (Front). Well i don't need new o2 sensors. RockAuto ships auto parts and body parts from over 300 manufacturers to customers' doors worldwide, all at warehouse prices. Best place to get dummy o2 sensors? Jump to Latest Follow 1 - 19 of 19 Posts. Connect the wire with the resistor inline to the black wires, resistor goes on the sensor side. Same problem occurs. It features two fully independent outputs and adjustable voltage output from 0 to ±12 volts (10 mV step). One end will plug into the oxygen sensor and the other end will plug into the vehicles wire loom. An o2 sensor (not Wideband o2) cannot accurately measure HOW rich or HOW lean the exhaust is. It is calibrated to output a complete swing of voltage every 2. Universal M18 x1. If you've been dealing with the symptoms of a bad oxygen sensor, a new sensor can make your car's emission control and fuel consumption right again. - If a V-6 or V-8 vehicle only uses one downstream Heated Oxygen Sensor (HO2S) it is numbered O2 Sensor 1/2, even if it. Select your vehicle's Submodel to continue. It's important to know how the O2 sensors are identified because a diagnostic trouble code that indicates a faulty O2 sensor requires a specific sensor to be. O 2 sensor "simulators" filter and condition the output of the rear sensor(s) to make the sensor's output to trick the ECU in to believing a properly working catalytic converter is installed and functioning. Plug in these o2 simulators in 5 minutes and keep that light off. The ECM then uses said value to control fuel injection pulse width. Just because a fault code indicates an oxygen sensor problem, don't just replace the O2 sensor. O2 Sensor Delete Signal Simulator Cheat For Mustang 96-04 Gt Cobra 4. The engine's computer looks at the voltage to determine if the mixture is rich or lean, and adjusts the amount of fuel entering. EZ CEL Fix. Unfollow o2 sensor simulator to stop getting updates on your eBay Feed. Mustang O2 Sensors. im not anywhere near my laptop to double check this but i think you click on engine diag, DTC's and uncheck po137, 138, 140, 141 for bank 1 and po157, 158, 160, 161 for bank 2. 90 Degree O2 Oxygen Sensor Socket Real Mini Catalytic Converter With CEL Check Engine Light Bungs,Stainless Steel. Pulse oximetry is a noninvasive method for monitoring a person's oxygen saturation. 0L SUV can be tested, and in this article, I'll show you how in a step-by-step fashion. I'm looking for dummy replacements or plans to build my own. Or, the downstream oxygen sensor might be labeled Bank 1 Sensor 3 if the engine has two upstream oxygen sensors in the exhaust manifold (some do to more accurately monitor emissions). 5 O2 Bungs O2 Sensor Threads into female end Use one of the three (3) included "jets" to help fool the O2 Sensor and eliminate Check Engine Lights Single Unit, Retail Pack Important Note: This item is not vehicle specific. Joined Aug 1, 2005 · 29 Posts. I am looking for some o2 sensor simulators or eliminators myself. For optimum catalyst operation, the air fuel mixture (air-fuel ratio) must be maintained near the ideal stoichiometric ratio. I just installed New exhaust on my 98 C5 Convert. If the catalyst is removed, the PCM usually starts reporting P0420,p0430 faults for catalyst efficiency. When the O2 sensor is cold, it produces NO voltage output. First sensor is measuring it right after gases escape engine and this data is used to adjust fuel trim of the engine, as well as catch some faulty conditions. AutoSim is a smart testing device with power-on self-test. This sensor is doing its job and does not need to be replaced. Sensors, injector actuators will inform the scan tools that there is a problem, but Sensor simulator will allow the technician to know if the faulty operation is a faulty sensor a problem in the car computer, a defect in the wiring… The device is specially used for wiring tests. No simulator or spacer for me with no CEL, and I'm catless. anybody please correct me if i'm wrong. Jump to Latest Follow 1 - 17 of 17 Posts. Universal fitment - M18 x 1. 10 Oxygen Sensor O2 Sensor Gas Sensor AO2 CiTiceL Molex Connector AO2 Oxygen Sensor Test Instrument Of Oxygen Index Enjoy Free Shipping Worldwide! Limited Time Sale Easy Return. 5 Volts (check your model’s specifications). Wait for the check engine light to come on. The Sparkplug Non-foulers uses the same thread size as the O2 sensors. Oxygen Sensor Simulators. – The response from the O2 pot will depends on the EGO/O2 settings in TunerStudio. Find oxygen sensor for sale on bidorbuy. 45 inches) is molded into the end of the connector to provide the most compact and water resistant simulator on the market. A brand new replacement oxygen sensor can cost you from $20 to $100, depending on the make and year of your car. However, the computer grounds the heater circuit for the O2 sensor. 5 to 3 seconds, which is. im not anywhere near my laptop to double check this but i think you click on engine diag, DTC's and uncheck po137, 138, 140, 141 for bank 1 and po157, 158, 160, 161 for bank 2. Oxygen Sensor Simulator Fitting with Adjustable Jets, T304 Stainless Steel (M18 x 1. Search our online oxygen sensor catalog and find the lowest priced discount auto parts on the web. We have been getting requests for our sim application for other vehicle brands and have not made a UNIVERSAL application that will work on any vehicle with a 0-1 volt rear O2 sensor. Oxygen Sensor Simulator Schematic. 99 Crown Automotive Oxygen Sensor for 07-09 Jeep Wrangler JK with 3. 5 to 3 seconds, which is. If you are close to the manifold, the exhaust gasses will do an admirable job in keeping the O2 sensor nice and toasty. This tutorial will help you to test the upstream oxygen sensor (commonly known as the O2 Sensor Bank 1 Sensor 1: O2S11 and located before the catalytic converter). Connect the electrical wiring to the dummy sensor. flyguy7150 · Registered. Or you can spend the money and get the plug and play simulators. Between the Haynes Guide and dealership "Sensor 1/2" means "Sensor 1 Bank 2" = post cat passenger side Cost for O2 sensor from Dodge dealership = $55. The o2 sensor for your Chrysler PT Cruiser is as important to your engine as it is to your vehicle's emission control system. It endeavors to provide the products that you want, offering the best bang for your buck. Note the cigarette lighter plug used for power source. hello i got an interesting project but have no experience in designing a circuit so basic story is that i got an old volvo that get too much fuel with the new generation fuel, i think its bechause new fuel contanes more oxygen burn cleaner and leave more oxygen in the exhaust witch the O2 sensor pick up and the ECU think its running lean then compensate with more fuel. anybody please correct me if i'm wrong. I am looking for some o2 sensor simulators or eliminators myself. It is calibrated to output a complete swing of voltage every 2. 09 volts DC every 3. Is anyone running an o2 simulator, if so what's the brand and your thoughts on it? Backstory: Just got the 98 TJ 4. Only use red, because the voltage drop of the LED is part of the circuit!. This link should work: Casper's Nissan O2 Sim. # 6 ( permalink ) 09-28-2016, 09:41 AM. Oxygen Sensor Tester Simulator Add290 Test And Simulate Any Oxygen Sensor. If you have a tbi system you need to hook up the O2 sensor. Your oxygen sensor, sometimes called an O2 sensor or air-fuel ratio sensor, measures the oxygen level in your exhaust gases. Oxygen Sensor Trouble Code Basics. From what I understand the voltage varies off the O2 sensor and the PCM is smart enough to pick up on the fact that the simulator has a fixed voltage. It is P0051 I believe is O2 sensor Bank2 sensor1. Lower the vehicle to the ground and start the engine. 9 lambda sensor. It endeavors to provide the products that you want, offering the best bang for your buck. AutoSim is a smart testing device with power-on self-test. Sensors, injector actuators will inform the scan tools that there is a problem, but Sensor simulator will allow the technician to know if the faulty operation is a faulty sensor a problem in the car computer, a defect in the wiring… The device is specially used for wiring tests. So a defective heater in the O2 sensor is the only way to. Didn't see a cel upon start up and noticed a rich smell. Kawish Cr508 Common Rail Pressure Tester And Simulator Sensor Test Tool. 0L Turbo) 21: 10-02-2008 01:09 PM: FS: Front oxygen. Re: How to Install O2 Simulator new to the forum but i wanted to say nice write up. The ECU+ includes a front and rear O2 simulator. O2 sensor simulator. The July 10 settlement, the first of its kind, requires Casper's to stop selling electronic devices known as oxygen sensor simulators or " O2 Sims," recall the devices and pay more than $74,000 in civil penalties to the federal government. In addition, the sensitivity of the oxygen sensor is also reduced allowing you to run a nearly any exhaust or catalytic set up, including bypass pipes, without the need to reprogram your ECU! This Mini Catalysator simply is screwed on to your existing O2 sensor. 95 (you'll need 2). The oxygen sensor is sensitive to impacts and jolting and must be handled with care. hello i got an interesting project but have no experience in designing a circuit so basic story is that i got an old volvo that get too much fuel with the new generation fuel, i think its bechause new fuel contanes more oxygen burn cleaner and leave more oxygen in the exhaust witch the O2 sensor pick up and the ECU think its running lean then compensate with more fuel. Features: The O2 Sensor Simulator can help clear the following check engine errors: "Catalyst System Efficiency Below Threshold" - P0420, P0421, P0422, P0423, P0424, P0425, P0426. How to build Your Own Oxygen Sensor Simulator! The rest of the page shows how to build an oscillating signal generator with just the right frequency and voltage to fool the ECU. Oxygen Sensor Simulator Fitting with Adjustable Jets, T304 Stainless Steel (M18 x 1. The oxygen sensor detects the quantity of oxygen present in the exhaust and communicates with the exhaust system so that the engine can regulate the fuel/air mixture in order to properly and most efficiently operate. Retail: $100. com with the subject line o2 Simulator. I just installed New exhaust on my 98 C5 Convert. One white and two gray. Features: The O2 Sensor Simulator can help clear the following check engine errors: "Catalyst System Efficiency Below Threshold" - P0420, P0421, P0422, P0423, P0424, P0425, P0426. 8l 12v VR6 Engine Forum. 7 but the front sensor on my 3. But I'm having an issue with the O2 sensor. You can just plug the rear O2 sensor holes with a large 18 MM 1. Wiring is one of the more confusing and tedious parts of our hobby, especially with today's vehicles, and the seemingly miles of wire! Caspers Electronics makes a number of wiring add-on harnesses, adapters and pig-tails to take the guess work and time out of installing things like in-line fuel pumps. A properly running simulator will generate an oscillation of 1-2Hz at 0. High Performance combined with High capacity to effectively remove p0430 / p0430 cels. You don't need a lift to get to the second O2 sensor. This is the reason the o2 simulators dont work alot of times because simply put, the engineers who designed the DME are 10 steps ahead of us. Wrong O2 Sensor– If you are getting P0138 after having recently replaced your Oxygen sensor, it may be that the replacement is wrong or bad. Note the cigarette lighter plug used for power source. This Chevrolet O2 Sensor Simulator is adjustable, making you enable to adjust the Air Fuel Ratio within certain range yet complies with the requirement of ECM.