Car remains running but accelerator fails completely unless it is depressed all the way down. several lights come on including the VSC and Engine lights, almost as if the car stalled out. it can be reset sometimes by turning off the engine and turning it back on. Lexus states that this problem does not exist and they have never heard of anything like it before. I have had it at the shop for this problem 3 times and they refuse to acknowledge the problem at all, even with a thorough electronics diagnostic exam.
I can't believe someone else has the same problem. But I already knew it was not me because it only happens when I,m on a family outing. Resets after turning off and immediately restarting
I can't believe someone else has the same problem. But I already knew it was not me because it only happens when I,m on a family outing. Resets after turning off and immediately restarting
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I have the same problems with my wifes lexus ls400.It has been in the shop 4 times and they cannot fix problem.I am going to replace the tps but there are two of them I believe.are they hard to install and adjust? email me back and let me know.Greatly appreciated..I have the same problems with my wifes lexus ls400.It has been in the shop 4 times and they cannot fix problem.I am going to replace the tps but there are two of them I believe.are they hard to install and adjust? email me back and let me know.Greatly appreciated..
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Try this. If tps is positioned correctly and idle is correct.
You can recalibrate the throttle yourself to eliminate flat spots or pauses in its response curve.
This should work on most Fly by wire cars, they work on chevy and dodge for a fact
1-ignition to RUN but do not start 2-wait until all the dash warning lights go out (engine light should be the only one to remain on) 3-slowly depress the gas peddle to the floor (take at least 15 seconds to gradually push it to the floor, do not waver as you push) 4-slowly release gas peddle to full up (again, take at least 15 seconds to gradually let it back up, do not waver as you let up) 5-ignition to off 6-DO NOT START IMMEDIATELY! Allow to sit for up to 10 mins+, then start and check for difference in response and linearity.
Below the procedure to reset ECU,Throttle and to perform Accelerator Position Learning on Nissan. It works on Titan, Altima, Infinity, pathfinder and other models.
ECU Resetting
While performing the procedures below, ensue that you are respecting the times stated. If the steps are not done within the specified times, the module will not reset. You will need to use a watch or a chronograph while performing the procedures.
Procedure:
1. Ensure that the accelerator pedal is fully released, set ignition switch to the “ON” position, then wait 3 seconds. 2. Follow the steps a and b below, repeat the two steps in sequence quickly for five times within 5 seconds. a. Push hard the accelerator pedal untill fully depressed. b. Release the accelerator pedal in full. 3. Wait 7 seconds, then depress the accelerator pedal completely, and hold it for about 10 seconds until the CEL (check engine light) starts blinking. 4. Release the accelerator pedal while the CEL is still blinking. 5. Wait 10 second. 6. Depressthe accelerator pedal in full and hold it for 10 seconds or more. 7. Fully release the accelerator pedal while the CEL light keeps flashing. 8. Turn the ignition switch to “OFF” position and start the vehicle. If procedure has been done correctly, then the light light will turn off. If the light continues to stay on, repeat the procedure.
Accelerator Pedal Release Position Learning
Procedure
1. Ensure that the accelerator pedal is completely released before starting the procedure. 2. Turn the ignition switch “ON” and wait at least 2 seconds. 3. Turn the ignition switch “OFF”, and wait at least 10 seconds. 4. Turn the ignition switch “ON” and wait 2 seconds. 5. Turn the ignition switch “OFF” and wait 10 seconds.
Throttle Valve Closed Position Learning
Procedure
1. Ensure that accelerator pedal is completely released. 2. Turn ignition switch to the “ON” position. 3. Turn ignition switch to the “OFF” position and wait at least 10 seconds. Ensure that the throttle valve moves after turning the switch off.
Idle Air Volume Learning (Throttle Position Learning)
Procedure
1. Follow the Accelerator Pedal Released Position Learning described above. 2. Do the Throttle Valve Closed Position Learning also described above. 3. Start the engine, and allow warming up. 4. Turn the ignition on “OFF” positionand wait 10 seconds. 5. Ensure that accelerator pedal is fully released, then turn the ignition switch to “ON” position, and wait 3 seconds. 6. Repeat the steps a and b below five times within 5 seconds in sequence. a. Push hard the accelerator pedal untill fully depressed. b. Release the accelerator pedal until reaching full extension. 8. Wait 7 seconds or more, depress the accelerator pedal completely and hold the pedal down for about 20 seconds until you see that the Check Engine Light stops blinking and starts getting steady.. 9. Rrelease completely the accelerator pedal within 3 seconds after the light coming ON. 10. Start engine and let it run at idle for about 20 seconds. 12. Test the engine to ensure the idle speed and ignition timing are set correctly.
Your engine probably has an automatic choke device that adjusts automatically with engine temperature. To set the choke when the engine is cold you have to depress the accelerator to the floor and release it completely. You shouldn't have to depress the accelerator again to start the engine, turn the key the engine should start. As the engine begins to warm up it will also begin to initially run faster then it will start to run rough. At this point you have to press the accelerator and release it again. The auto choke mechanism should allow the choke butterfly to open. There may be a number of stops in the system and the choke butterfly will stop again still not fully open and only become fully open when the engine is at operating temperature. Hope this answers you question, Rgs. Bob
check engine light is on? if yes, You need an OBD scanner to dianose the problem. if no, its a mechanical problem. 1st, check if their is a vacuum leaks using the carburator cleaner to spray all over the emission, carburator, the vacuum lines if the idle going up you found the leak, now if still don't work, check if the fuel injector if not failing, check also the fuel filter and cracks on the exchaust manifold.
you may have flooded the motor jusy wait half hour and retry if it doesnt start try holding to the floor and cranking untill it trys to run then by holdig it down it clear the flood only crank 15 to 20 seconds and dont take foot off pedal when you stop cranking just wait 30 to 45 seconds to crank agian and never let up until it runs. hope this helps Thunderboltz
Turn key, on, off, on, off, on & leave it on (not start) & count check engine flashes. 2 digit codes, for example: flash, flash, flash, pause, flash,flash., is code 32
First of all, you should'nt do this unless you know what the problem is.. or what tripped it. I had this problem when my husband and I were replacing a head unit and disconnected the old head unit, a/c and other stuff then turn the car on. This made the light flash. The first time we took it in and got charged $50 to reset it. The second time we did this procedure and it worked.
ECU Resetting Procedures
Timing is extremely critical. If it is NOT DONE within the specify time, the ECU will not reset and the Check Engine Light (CEL) will continue to remain ON. A stop watch or an analog clock with a second’s needle will be useful.
Reset Check Engine Light Procedures
1. Confirm that accelerator pedal is fully released, turn ignition switch “ON” and wait 3 seconds. 2. Repeat the following steps (2a and 2b) procedures quickly five times within 5 seconds. 2a. Fully depress the accelerator pedal (HARD). 2b. Fully release the accelerator pedal. 3. Wait 7 seconds, fully depress the accelerator pedal and keep it for approx. 10 seconds until the CEL starts blinking. 4. Fully release the accelerator pedal (while the CEL is still blinking) 5. Wait about 10 seconds. 6. Fully depress the accelerator pedal and keep it for more than 10 seconds. 7. Fully release the accelerator pedal (The CEL light will continue to blink). 8. Turn ignition switch to “OFF” position and now you can start the car. The CEL light should be gone.
If the CEL light continues to remain ON, repeat the above steps. Timing is EXTREMELY critical to resetting the ECU.
I can't believe someone else has the same problem. But I already knew it was not me because it only happens when I,m on a family outing. Resets after turning off and immediately restarting
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