Question about 1986 Ford Bronco II

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When accelerator is pressed down the engine stuters until use ease off the pedel. can only use 1/4 to 1/2 throttle.

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The most common problem for this is the fuel filter or dirty spark plugs. If it is the plugs you would have a slight miss when idleing or be able to smell gas fumes from exhaust. Also your gas mileage would go down. The fuel filter will cause the vehicle to feel like it will stall and die when you try to accelerate or raise the rpm's in idle. I hope this helps. If you try both and it does not help try pulling the trouble codes and having them checked.

Posted on Feb 03, 2010

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1 Answer

My 1998 200sx stopped accelerating while getting on freeway.


Could be the cable that actavates the throttle plate on the intake..
The cable comes from the gas pedel and pulls on the throttle plane in the intake manifold.. opening the plate to let air flow through to the engine. On the other side from the cable is a plastic sensor with wires attached to it this is the Throttle position sensor.. if this is disconnected or broken the computer cannot receive the single that you are pushing on the gas pedel.. very rare for the throttle position sensor to break completly.. best posibility broken cable.. open hood find cable connected to throttle body, have someone in car push pedel see if it moves. Good luck.

May 11, 2014 | 1988 Nissan 200SX

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How to reset ECU,Throttle and Accelerator Position Learning


Hi.

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.

Regards.

on Mar 25, 2010 | Nissan Titan Cars & Trucks

1 Answer

Stepped on gas on my 2004 mercedes c240 and no acceleration then engine light came on, whats going on ?


If the sensor in the pedal value sensor fails the system,switches over to the second one .The throttle will be limited to 60%. A electronic throttle acuator will be the solution

Mar 28, 2012 | Mercedes-Benz C240 Cars & Trucks

1 Answer

2000 jaguar XJR. pressing accelerator - nothing happens -


if its a v8 its gonna be your throttle body its a complete assembly and is a common problem on these models

Apr 11, 2017 | 2001 Jaguar XJ8

1 Answer

My gas pedel gets stuck half way down some times


The throttle position sensor is most likely bad or it just may be the throttle cable but I think it is the Throttle position sensor it is located near the throttle valve follow the throttle cable to the end this is where the throttle valve is and the Throttle position sensor is located near the throttle valve on the opposite side it will have a plug going to it and it is held on with two torx head screws purchase the tools and replace.

Nov 03, 2009 | 1998 Buick Century

2 Answers

1993 Lexus Ls400 loss of power at 2500-3000rpm


Check your MAF and MAP sensor. The first 80% of your throttle signal from the TPS works with the O2 sensor to try to keep the air fuel ratio to 14.7 to 1 with the ECM controlling the fuel injector spray time and timing the ignition. After the 80% to WOT the ECM puts the O2 sensor in to an open loop and takes the Reading form the MAF and MAP sensor to run the engine richer so there will not be any Detonation to the engine and burning holes in the valves for running too lean. That is why it always feel like you get a little more when you ease off on the gas peddle from WOT. Recap check the TPS, MAF,and MAP sensor and wires to those sensors, if you can get the car scanned that would be great and you may find out which sensor may have gone bad, the other thing to is the fuel pressure regulator may be going bad and at WOT the pressure may be to high causing it to run to rich causing the loss of power. Good luck and hope this helps. 

Jul 04, 2009 | 1991 Lexus LS 400

1 Answer

1993 Lexus Ls400 loss of power a 2500-3000rpm when you accelerate hard on the gas pedel, however if you press down on the gas pedal slowly the power will increase all the way up to 6000rps with no power...


It sounds like a fuel delivery issue so it could be many things such as low fuel pressure from the pump,clogged or partially pluged fuel filter, a malfunctioning throttle posisitioning sensor (if you have a check engine light on) or if its turbo it could be turbo lag etc.

Jul 04, 2009 | 1991 Lexus LS 400

1 Answer

Engine runs rough after about ten minutes /idles really low


Just trowing some suggestions out there, but, I would check the idle air control valve (solenoid) or the throttle position sensor. If they check out then my last guess would be the map sensor or the vaccuum to the map sensor. Hope I was able to help. Best wishes.

Jan 16, 2009 | 1991 Plymouth Laser

1 Answer

Intermittent power loss after accelerating hard


hi what is your car have no codes come up if not do a fault reading see if it has stored any as tps [throttle position sensor ] map sensors and airflow sensors will cause this problem as will a few others it can be expensive guessing yates210456

Oct 17, 2008 | 2003 Nissan Se R

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