High Idle After Replacing Throttle Position Sensor

If you really want to get down to the nitty gritty, you can also remove the throttle body from the plenum: just remove the Throttle Position Sensor, and be prepared to silicone the gasket in between the throttle body and the plenum when you button it back up. If not, head down to the dealer and see if they can do an idle learn for you. Intermittently the idle will jump around while driving. Badly adjusted valves. This is an aftermarket (TIMBO) throttle position sensor for '98. What are the symptoms of a faulty throttle position sensor? TPS is a replacement only item. It is a much more frequent occurrence on motorcycles where the TPS is mounted in a position where it is exposed to water and physical damage (i. It was almost as if the car was randomly deciding to increase the throttle, or move it. Harley-Davidson Electronic Throttle Control. 8L or GSi Model. GM Sensors have traditionally been outsourced to overseas manufacturers, the same ones who supply throttle position sensors to other makes like Ford and Toyota. the engine light came out within a few days and the scan said I believe P506 which indicated idle was running under spec (which it was). Let the engine idle with all of the accessories in the off position (such as A/C). N8 (Aluminium Throttle Body) Part No 1635. Remove the front engine mount nuts (Figure 2). If at all possible, I try to do all required minor repairs to any of our out of warranty vehicles. Broadcast Message 0059. TBA/TPS Throttle Body Alignment Resetvehicle's throttle position system sensor connected to the butterfly spindle and is primarily used to monitor the throttle position within an inner combustion engine. Sometimes it will go down to 1100. Do the resistance checks for the Throttle Position Sensor per page FI 69 in the Factory Service Manual. Reset throttle position sensor idle position memory. Engine rough idle problems arise because car engines are demanding. I changed the Mass Air flow sensor,and the throttle position control. The TPS itself is simply a linear variable resistor that when driven by the ECU produces a linear voltage in a 0-5 volt range, 0 volts being idle and up to 5 volts representing. We replaced the throttle sensor, fuel filter and pump and check for leaks. 80% of your problems will begin in the Throttle Body!! FYIGMC will not sell U a Idle Air. This problem is perfectly normal after cleaning/replacing the throttle body. my wife's '03 GTI 1. efi spares trade tips. if your Harley throttle by wire acts up and high idles when cold starting, dont panic Try This To reset your idle setting back turn the ignition switch on for 10 seconds off for 10 seconds (do not start the engine), repeat a total of 4 times. Check for loose connections to all the sensors and the computer. 7 has been having a high idle, like around 1200. Start the engine and adjust the idle adjustment screw to bring the idle back down but, leave it a little high (around 1000 RPM). If a driveability concern is experienced right after throttle body cleaning/replacement and SI diagnosis does not isolate the cause of it, perform step 1a. Code scanners will usually pick up on electronic speed sensor malfunctions, but they do not reliably detect problems with mass air flow sensors or throttle position sensors. Throttle position sensor, part #89452-22090; 1) Unplug the connector from the TPS. 7L throttle position sensor IP: Logged Message: I have 2000 QC 4. 0L ( XJ ) limited trim. Now, the intake manifold and throttle body are removed as an assembly. 8T all of a sudden started to run rough (has a misfire). This sensor is designed to provide the ECM with accelerator pedal position as well as its rate of change or how fast the driver is pushing on the gas pedal. That's what my car did when I had my Corsa. 2) Remove these 3 10mm bolts and then remove the throttle body cover. If at all possible, I try to do all required minor repairs to any of our out of warranty vehicles. 1999s70 (George) over on Swedespeed posted the following which I hope you will find highly informative and helpful: As one who is on his 5th Electronic Throttle Module (ETM) and 4th Mass Air Flow Sensor (MAF), I'd like to write of my experience with these, in particular noting the symptoms of their impending failure (so that you don't suddenly find yourself with a stalling car as an 18. It will eventually learn it on its own, but it may take over a week of driving, during which time you will experience high and low idle speeds and possibly rough idle. Clean both solenoids and reinstall. The throttle position sensor, or TPS, is used to control the actual throttle position relative to the amount of feedback it receives from the "Go Pedal. If at all possible, I try to do all required minor repairs to any of our out of warranty vehicles. 1A Auto has a large selection of MAF Sensors for many makes and models, and ground shipping is always free!. 132 ECM APS signal voltage out-of-range HIGH. The throttle position sensor, shift lever, and throttle valve cable are critical to proper operation of the transmission. Throttle Position Sensor setting procedure for Moto Guzzi California and Bellagio set to 3. The idle may be unstable or a DTC may set if the throttle position is not learned. - After the 2 minutes, run engine at idle speed, with no applied load for 6 minutes (Air conditioning OFF, no throttle movements, no vehicle movement, etc). If you didn't have this high idle problem before the throttle body motor replacement, you need to start by returning the throttle body and getting another one. This article covers troubleshooting diagnostic trouble codes (DTCs) P0121, P0122, P0123 on Dodge 3. edu is a platform for academics to share research papers. 8T all of a sudden started to run rough (has a misfire). Have a 94 Toyota Tercel-high idle problem,it idles at 1400 rpm. The throttle position sensor is one of the most crucial components of any fuel injection system, right after the computer and fuel injectors in terms of importance. The reply was the TPS (throttle position sensor) needed to be replaced. 46 volts at idle and between 4. Replacing the MAF completely cured the driveability issues, but the idle surge remained. I have thoroughly cleaned the throttle body and replaced the throttle position sensor so far. That's what my car did when I had my Corsa. The idle contact closes when the throttle valve is positioned at idle and opens when it is in any other position. Turn on ignition, do not start the engine, depress the accelerator pedal to full throttle, then return it to the half-throttle position and hold for a few seconds, and then release Engine Check lamp turns on Start engine and then drive for at least one minute, keeping road speed above 11 Km/h. Bad Sensor Input 1. High idle I've replaced a couple cracked hoses and will probably disassemble the intake manifold to clean the throttle body, ICV and replace whatever other hoses are down there. 6L engine, this article is intended to help you understand how the ISC (Idle Speed Control) system should work and how it may fail (my experience). Components in the fuel, ignition, emission and other systems should work correctly. By Ross Kuhre (Stock 93 MX-5, C package, 130k mi). Here’s the throttle body relearn procedure. Page 1 of 3: How to Test the Throttle Position Sensor (GM 3. Replacing the O2 sensor corrected the idle surge. If it is shorted to ground, lock-up of the torque converter will not occur. If action is necessary then replace the oil level sensor on the affected vehicles. 2004 Honda Accord - P0171 - × Help us help you. After that the Idle Learn procedure started normally and was completed shortly after. Using a can of throttle body cleaner, spray short quick bursts into the throttle body while moving the throttle butterfly from the closed to the full throttle position. The coolant temperature sensor is also used by the power train control module to adjust the engine's air fuel mixture ratio, making it richer when the engine is cold. Disconnect the TPS coupler. Bad / mal-adjusted throttle position switch. The TPS monitors the position of the throttle valve, which regulates how much air is supplied to the engine. The following symptoms can be caused by a faulty IAC due to loose connections, bad grounds, high resistance in the circuit, or opens in the circuit. I cleaned the throttle body and the idle air control valve. The TPS itself is simply a linear variable resistor that when driven by the ECU produces a linear voltage in a 0-5 volt range, 0 volts being idle and up to 5 volts. If a driveability concern is experienced right after throttle body cleaning/replacement and SI diagnosis does not isolate the cause of it, perform step 1a. The Throttle Position Sensor (TPS) must not be confused with the Throttle Pedal Position Sensor (TPPS). Rough or high idle; Surging; Engine hesitates on acceleration; Possible Causes. PCM Update: Some 6. Dirty throttle plate- clean with carb cleaner and/or dirty maf sensor- clean with electrical contact cleaner or bad throttle position sensor-replace. With the passage of time, the sensor loses its efficiency and thus has to be replaced. The ECU (or ECM) is constantly monitoring the Crank Position Sensor, Throttle Position and Intake Air Temp. The electronic control module determines the controls the throttle plate and fuel control valve to provide the correct air/fuel ratio based on driver demands. My Tahoe ran a little funny and had a high idle once I cranked it back up. If your have an adjustable throttle position sensor (old vehicle model), and your readings are out of specification, try to adjust the sensor first before replacing it. ) You take your foot off the BRAKE and the computer senses this. Could be that it is telling the computer to increase the idle to keep the engine running at idle but im not sure on that one. I advanced it from -4. Was advised to consider replacing the Mass Air Flow sensor but that part doesn't exist for the '87 model. However, everything in a car that determines air fuel mix has effects on fuel economy. P0122 Throttle Position Sensor/Switch A Circuit Low Input OBD-II Trouble Code Technical Description. Only once did it surge really high to the point where i had to cut it off thinking it might blow up. It actually helped. It’s a terribly designed engine in that when the water pump shaft seal goes (as they are prone to do), the leak dumps coolant into the crankcase and fouls the oil. The accelerator pedal position sensor (APP) is of central importance to the drive-by-wire system. If I push on the throttle plate to push it more in the closed position, the idle does drop a little bit. Engine was used on 1995,1996,1997,1998,1999,2000,2001,2002 and 2003 Mitsubishi Pajero 3500. it is either the Idle Air Control valve, or the Throttle Position Sensor. The Throttle Position Sensor (TPS) is a potentiometer attached to the throttle body which notifies the ECU about the position of the throttle. Cummins ISL-G Engine Control System The control system for the ISL-G engine is a closed loop control system. Sent to workshop and they said the carb is already bad and needs replacing. 4 Control Circuit. This procedure should be performed after the minimum idle air settings are already made (via the IAC reset procedure). I replaced the throttle position sensor on my 2005 KIA Optima about a month ago after reading a trouble code. The mass airflow sensor (MAF) measures the amount of air entering the engine. I drove it over 100 miles to try and rest the computer. If the idle contact or its circuit on either throttle sensor malfunctions, certain symptoms occur. Make sure accelerator pedal is fully released. If it jumps up and down there is a dead spot and it needs replacing. It can be tested by connecting an ohm meter and moving where the throttle shaft inserts. If this sensor is out of adjustment or is failing, the result could be stalling, idle surge, flat throttle response, hesitation, or erratic engine operation. Can't help you with the farty sound, but as I discovered, the idle is influenced by the Throttle Position Sensor. This signal passes through the carbon track, over the 2 contacts and returns via the second carbon track to the ECM, which uses the remaining voltage as the throttle position signal. When the throttle gets stuck in an open position than your vehicle will receive too much air and cause it to have a high or fluctuating idle. Below are some of the symptoms you might experience if you have a bad TPS on your Ford F-150 or Super Duty. How can you pull the main fuse and not turn the bike off? Will it still run with it out? Throttle position sensor problems had my bike doing all sorts of things turning off when stopping, rough running, etc. If the voltage skips as you tap the sensor, replace it. 4T MPx bored throttle body. Aside from high idle issues, low idle and even sporadic stalling can both be attributed to a bad idle control valve. With the throttle in the idle position you should have voltage greater than. TBA/TPS Throttle Body Alignment Reset vehicle's throttle position system sensor connected to the butterfly spindle and is primarily used to monitor the throttle position within an inner combustion engine. When you have checked all the possible causes listed and you are still experiencing the problem, see your John Deere distributor. Now I have high idle and don't know why. If the voltage skips as you tap the sensor, replace it. " If this sensor falls out of calibration or fails, you may experience issues controlling the throttle of the car. so far no check engine light. Now that we are already aware of how a throttle position sensor facilitates the engine to adjust the correct amount of fuel in the vehicle so that it feeds the right data to the computer time and again, a slight malfunctioning in the sensor creates a host of problems. 1) Start the engine and let it idle in park for 3 minutes. The check engine light will not always go away after replacement of the TPS. The following symptoms can be caused by a faulty IAC due to loose connections, bad grounds, high resistance in the circuit, or opens in the circuit. The idle contact closes when the throttle valve is positioned at idle and opens when it is in any other position. At times when I'm driving the idle is fine, but sometimes when I come to a stop the idle goes up to 1500 to 1800 rpm. 1A Auto has a large selection of MAF Sensors for many makes and models, and ground shipping is always free!. with replacing Throttle Position Sensor, tighten the 3 screws on the TBI, check for vacuum leaks. 27 Injector No. After checking that the drive-by-wire was functioning with the key in "on" but without starting the engine, I replaced the intake assembly and proceeded with the Throttle Relearn procedure also found on alldatadiy. SOLVED - Engine Failsafe after Valve Cover Seal Replacement for Blue Smoke. Throttle programming √ Used to clear the learning value after cleaning the throttle, otherwise it will cause high idle speed. Test all the sensors to see if they are actuating. Engineering specifications: The Mustang Fox body throttle position sensor (TPS) uses a floating ground-return to the computer. After replace fuel consumption is better again but now it's not as it used before. Or you can replace the throttle position sensor yourself to save money. It almost stalls when after being ran hard(er) and I blip the throttle at idle. Our OEM approved ultrasonic fuel injector cleaning service is the only injector cleaning method that can guarantee reliable results. The car was idling extremely fast so we took it to a caddy dealer and they replaced the throttle sensor and idle speed actuator. This sensor voids the need for manual distributor timing. the Check Engine/EPC light is not on. The only throttle position sensor ground is at the computer. So here, in a nutshell, is how the TPS on your Ford or Mercury or Mazda car (pick up, mini-van) works when you crank and start it: The fuel injection computer supplies 5 Volts and ground to the throttle position sensor. 4L) This article will take you step by step thru' the testing and troubleshooting of the throttle position sensor on your GM 3. • Idle mixture is out. After repair or replacement of faulty parts, Replace camshaft position sensor. Old (part #89452-12050) and New (part #89452-22090, about $74. So i changed the socket to another one, it was fine, and then it acted up again, i moved the socket and it was okay for a while and then after bumps or high speeds it would immediately act up again. Do the resistance checks for the Throttle Position Sensor per page FI 69 in the Factory Service Manual. 5 degrees and the problem never returned. Dodge Dart 1. Clean and adjust. Disengage the wiring harness connector. After repair or replacement of faulty parts, Replace camshaft position sensor. We (my brother and I) replace the fuel filter. The TPS itself is simply a linear variable resistor that when driven by the ECU produces a linear voltage in a 0-5 volt range, 0 volts being idle and up to 5 volts representing. Dont attempt to buy from Online auto parts house! They will not fit!!!!. 6L engine, this article is intended to help you understand how the ISC (Idle Speed Control) system should work and how it may fail (my experience). Should move freely. After cleaning the throttle body, many owners notice a very high idle, erratic (bouncing) idle, and unpredictable power surging. The readings should smoothly increase from 0 at idle to 750 (or 0% to 100%). If your throttle body is defective, you may not be able to repair it yourself. Battery matching √ After the battery is changed, you need to match the battery. Dodge Ram 1994-2001: How to Replace Idle Air Control (IAC) Valve. Over time as your throttle body collects carbon the air volume which passes through it changes very slightly. How a throttle position sensor works. Each Standard® sensor is a direct-fit replacement sensor that restores proper information transfer to the ECU on throttle position providing efficient fuel economy and engine performance Each Standard® throttle position sensor features quality construction that promotes accurate communication of throttle valve angle to the vehicles computer, resulting in improved performance. Lastly (I promise), don't rule out a mechanical issue. view details. After a bit of cranking it did start, but ran very rough, sounded like it was missing a lot, and it definitely smelled rich (probably due to lots of mis-fires). I do agree that the high idle speed would be explained by a vacuum leak, however, the following would also need explanation (which is why this issue is so damn vexing): 1. Clean throttle Body!!!! U may need to replace the Throttle position sensor or Idle air ( manually clean it out. If you ship your injectors to. Your options are to replace it with a new throttle position sensor. if your Harley throttle by wire acts up and high idles when cold starting, dont panic Try This To reset your idle setting back turn the ignition switch on for 10 seconds off for 10 seconds (do not start the engine), repeat a total of 4 times. IAC problems (never threw a code) were all solved. It still idles high!!! After I cleaned the throttle body I can see light around the butterfly valve, is that normal? Any thoughts? Was told it could be the throttle position sensor, does this make sense?. Or you can replace the throttle position sensor yourself to save money. Your IAC may be functioning correctly and the PCM is adjusting idle speed based on other sensor inputs during closed loop. After cleaning carbon from the throttle body of my 2008 Chevy Silverado it seems to idle up and down, but it stays idling high after i give it a little gas then come to a stop. my car when i back up jerks some times and and the taillights flicker. The throttle position sensor's job is to measure the angle of the throttle. Harley-Davidson Electronic Throttle Control. , which tell it RPM, Intake Air Temperature, and Manifold absolute pressure(MAP). The condition did not change after replacing any of these items. Any time the TPS or throttle body is replaced it is critical to properly adjust your throttle position sensor to avoid idling issues. ECU programming √ The car with EPB replace brake pads √ Electronic Parking Brake release Throttle programming √ Used to clear the learning value after cleaning the throttle, otherwise it will cause high idle. The same thing can happen if the throttle position sensor on a speed/density EFI system (no airflow sensor) is out of calibration or had a dead spot. makes tpms senser in displaying sensor IDs from the vehiclersquos ECU, inputting TPMS sensor replacement IDs and activate tpms sensors. I've got an issue that developed not long ago. Do the resistance checks for the Throttle Position Sensor per page FI 69 in the Factory Service Manual. 1999s70 (George) over on Swedespeed posted the following which I hope you will find highly informative and helpful: As one who is on his 5th Electronic Throttle Module (ETM) and 4th Mass Air Flow Sensor (MAF), I'd like to write of my experience with these, in particular noting the symptoms of their impending failure (so that you don't suddenly find yourself with a stalling car as an 18. The Toyota 22RE engines use a "Linear" throttle position sensor. Does anyone else have any suggestions? You would notice at idle more. 8T all of a sudden started to run rough (has a misfire). How to Do an Idle Relearn. Dont attempt to buy from Online auto parts house! They will not fit!!!!. N8 (Aluminium Throttle Body) Part No 1635. On models. TBA/TPS Throttle Body Alignment Reset. So, could be damage to throttle control motor, or the TPS potentiometer(s). A few months after replacing the TPS, I noticed the check engine light on again, and a slightly higher idle than normal, around 1000rpms at normal operating temperature. the Throttle Position. 4L) This article will take you step by step thru' the testing and troubleshooting of the throttle position sensor on your GM 3. It is impossible to switch the diagnostic mode when an accelerator pedal position sensor circuit "Throttle Valve Closed. The two metal prongs under the TPS move when the throttle is pressed. As you depress the accelerator pedal, the butterfly valve opens to allow more air to enter the engine. Throttle bodies may also contain valves and adjustments to control the minimum airflow during idle. But, the code was the most important. I have a scan tool, and I seem to get normal readings from the ECTS and IATS (that is, they read the same when the car is cold), throttle position is usually right at 0. P0223 - Throttle/Petal Position Sensor/Switch 'B' Circuit High Input P0122 - Throttle Position Sensor/Switch A Circuit Low Input. All air seems to blow from the defrost regardless of selector position? After replacing the compressor on my air conditioner the system seems to be over charged, not cooling and pressure too high. This problem is perfectly normal after cleaning/replacing the throttle body. If I push on the throttle plate to push it more in the closed position, the idle does drop a little bit. And if so was the resolution anything other than replacing the throttle body, that being the only way to replace the throttle position sensor, at least according to the repair manual. But after a day he emailed me -- told me that I have to replace the Air Fuel Ratio sensor -- DEALER PART only ---Now I have ran for over 300 miles my car CEL is still OFF -- I replaced the MAF and erased the fault codes. Intermittently the idle will jump around while driving. An idle air control valve, also called an idle air sensor control motor, is an electrically operated valve that controls the amount of air that bypasses the throttle plate in cars with a fuel injection system [source: Autozone]. It could either stay shut or it won't close properly which is a severe issue. The thing will not reset to normal when fuel pedal is pressed causing very high idle and are not able to regulate fuel properly causing high fc. 31 EVAP Leak Monitor Pinched Hose. Reconnect the Throttle Position Sensor connector; Test the Throttle Position Sensor Output Voltage. Throttle Position Sensor (TPS) Tester - 2201519-A This tester allows the use of a digital multi-meter to test TPS function as well as perform the TPS adjustment. Monitor the engines temperature by observing the temperature gauge. As one who is on his 5th Electronic Throttle Module (ETM) and 4th Mass Air Flow Sensor (MAF), I’d like to write of my experience with these, in particular noting the symptoms of their impending failure (so that you don’t suddenly find yourself with a stalling car as an 18-wheeler barrels down on you from behind), and also telling you how to replace the MAF yourself and save lots of $$. I noticed as car is running if the gas is pressed the throttle body does not open. Throttle programming √ Used to clear the learning value after cleaning the throttle, otherwise it will cause high idle speed. You have throttle codes so if you want to try something inexpensive if fuel pressure is good, try taking the throttle body off and cleaning it and replace the Throttle Position Sensor. The check engine light will not always go away after replacement of the TPS. Start your engine and pay attention to the idle of. U just hav to make sure that watever is the position of TS screw, ur throttle plate should be fully closed & there should be absolutely NO GAP between TS screw & throttle rotor. As you depress the accelerator pedal, the butterfly valve opens to allow more air to enter the engine. If this sensor is out of adjustment or is failing, the result could be stalling, idle surge, flat throttle response, hesitation, or erratic engine operation. Below are some of the symptoms you might experience if you have a bad TPS on your Ford F-150 or Super Duty. They could not tell me a specific problem other than POSSIBLE bad throttle chamber, TPS, or throttle body, OR bad ECU. Throttle position sensor, part #89452-22090; 1) Unplug the connector from the TPS. The 2000 cranks up fine with just right idle at all times. In this tutorial, I'm gonna' show you how to test it and how to adjust it (if you need to replace it). Again, start the engine and compare how it is running at a stop to how it normally runs. I disconnected the battery and everything TWICE. Vehicles equipped with automatic transmission only: Check and adjust the throttle position sensor (TPS) as follows (Figure 27): The injection pump throttle lever must be in the low idle position and the throttle lever must reach breakover when the throttle is wide open, turn the ignition key to the ON position,. The TPS sensor is a potentiometer, providing a variable resistance depending on the position of the throttle valve (and hence throttle position sensor). After the VR where the tranny was electronic, the third cable was replaced with a signal from a TPS (Throttle position sensor). Cleaned throttle body, now I have a high idle problem. , re-evaluate the concern after each step, and do not continue to the next step if a step repairs the vehicle: Subject: Incorrect Idle, DTC P0507, and/or Tip In Hesitation After Throttle. The amount of damage caused by a bad MAF sensor may depend on the vehicle. This is all best left to a professional mechanic who can provide you with a diagnosis, and then install the correct replacement part. You got the code correct Main Code 21, Sub Code 12 - 21 - Throttle position sensor, failed low! Use full throttle default, DNA. I didn't want to move the idle adjustment because it didn't constantly idle too high, it actually would go as low as only around 600-700rpm's even while in drive. The 2001 has a high idle when start up in the morning and after sitting for a while. In many instances, stalling ends up being an idle control motor at its limit or a failed motor. PCM Update: Some 6. If the voltage skips as you tap the sensor, replace it. Clean throttle Body!!!! U may need to replace the Throttle position sensor or Idle air ( manually clean it out. Well, this article in its simplest form has showed you the lucid steps to clean a throttle position sensor in a car! All the best and work safe!. Anytime the ECM or the throttle body is replaced, the ECM must learn the idle position. Or, it's possible there is a problem with the new oxygen sensor (or wiring). False "learned" or "adaptive" data 2. SOLVED - Engine Failsafe after Valve Cover Seal Replacement for Blue Smoke. 5-'04 Dodge Cummins Turbo Diesel trucks and is not a factory-style replacement. Your IAC may be functioning correctly and the PCM is adjusting idle speed based on other sensor inputs during closed loop. The Throttle Position Sensor (TPS) is a potentiometer attached to the throttle body which notifies the ECU about the position of the throttle. We went in and rechecked all, and I mean all, power and grounds again. Don't sweat it. 6: 2001 Ford F-150 King Ranch 5. Rough or high idle; Surging; Engine hesitates on acceleration; Possible Causes. Notify me when in stock Go. It can be cleaned using these steps. Solving Honda Idle Issues (hunting idle) was created by EricTheCarGuy This forum is flooded with questions about Honda idle issues so I've put together this 'revised' idle speech. But those codes might have been not cleared from running it unplugged. Toyota and Lexus rough idle after battery replacement A common concern DIY Toyota and Lexus owners call CARspec for is a rough idle, starting and dying, or a hard start just after replacing or disconnecting the 12 volt starting battery. If the throttle body is cleaned or replaced for an-other concern, such as a P0121 DTC, without performing a Tech 2 idle learn reset, a high idle and/or P0507 DTC may be induced. --> High Idle Idle After Cleaning Throttle Body I replaced my IAC and complete TB for less than $150 in parts a few years ago. Old (part #89452-12050) and New (part #89452-22090, about $74. Before performing any adjustments, check the transmission fluid level and sniff the fluid. The cost to complete this repair yourself is under $80 vs. It almost stalls when after being ran hard(er) and I blip the throttle at idle. Check for loose connections to all the sensors and the computer. I've changed most parts, except IAC and throttle position sensor, distributor, catalytic converter, you name it i'll answer. Before and still the engine will not idle when in drive after it warms up. Replacing CPS sensor may fix the crank and no start conditions. If your have an adjustable throttle position sensor (old vehicle model), and your readings are out of specification, try to adjust the sensor first before replacing it. When a throttle position sensor goes bad, your vehicle may stall or run rough at idle, and may stumble upon acceleration. $400 at a shop. If your TPS sensor has turned on the check engine light, you may need to clear it with a scanner. I would check the throttle position sensor. A physical inspection will help you see if the throttle body needs a replacement. I have a '93 124 with the 2. 80% of your problems will begin in the Throttle Body!! FYIGMC will not sell U a Idle Air. Nothing outragous but just one time it will barely be idling high enoug to keep running and then the next time I ride will be idling a bit high. 3i Check the throttle position sensor. Among other things it helps the engine maintain a stable idle speed. Don't sweat it. ISC (Idle Speed Control) Troubleshooting, Replacement, Repair. My advice after that is to take it in to a dealer or trusted independent for testing. This allows the engine's idle speed to be maintained constant. The idle switch on your 3. unbolt the throttle body, pull it up a little to make it easier to get to the plugs and hoses unplug the TPS (throttle position sensor) and IAC plug then remove the vacuum lines , throttle cables removing the IAC from the TB can be difficult because it has phillips screws, a hammer operated impact driver works to get these off. I finally took it to Nissan and after having my car 5. After repair or replacement of faulty parts, Replace camshaft position sensor. If the resistance is not 7-13 ohms, replace the IAC valve. Set your scanner to display the relative throttle position (Throttle position relative closed throttle) and then slowly depress the accelerator. I have 2005 mustang gt and just had passenger air bag replaced which required battery disconnect. I cleaned it up a bit more any way just in case. The throttle position sensor is one of the most crucial components of any fuel injection system, right after the computer and fuel injectors in terms of importance. If it stays shut then your engine is not going receive air and it won't start. TPS Throttle Position Sensor. i have replaced my throttle position sensor and my pedal position sensor. 1 volts in the closed position and no more than 4. 2003 RSX - Intake Manifold Removal and Installation Exploded View - K20A3 Engine Removal - K20A3 Engine 1. I own a 2002 Jeep Wrangler Sport. Car won’t accelerate, lacks power when accelerating, or accelerates itself. Water Pump Replacement in a Chrysler 2. The 2003 Nissan Altima has 23 problems reported for cam and crank shaft sensor failure. Step 1 - Finding the IAC. This article is to help out with the troubleshooting of the ETCS-i (Electronic Throttle Control System intelligence)also otherwise known as the DBW (Drive By Wire) system found on the 2JZ GE and GTE VVTi, this article is aimed at the supra but may also to apply to the JZS161 Aristo or any other ETCS-i equipped …. I got several very good responses pointing me toward the TPS (throttle position sensor). Vacuum leak(s) Spark plugs. So my 2003 Ram 1500 with a 4.