Question about 2003 Nissan Sentra

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Accelerator pedal must be pressed to start car

Low idle when first started until alternator comes on

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  • Nissan Master
  • 5,568 Answers

You engine probably has a 'cold start valve' that enriches the fuel/air mix when the engine is cold and these are often problematic. You might go to a chain auto parts store and ask them to do a (free) scan of your computer since errors of this kind are often stored there.

Posted on May 31, 2010

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Posted on Jan 02, 2017

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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

Engine revs up down while in idle


If its been without the line for over a year, I Highly doubt it. Look into IAC valve. Most are installed with 2 screws, easy to adjust. Idle Air Control Valve. Look that up, for a start.

Apr 15, 2014 | Toyota Matrix Cars & Trucks

1 Answer

Why did my engine stop accelerating just stay at idle


Your accelerator pedal is bad. The IVS (Idle Validation Switch) is probably not shutting off, or the potentiometer in the pedal went bad.
Hopefully you do not have adjustable pedals as the pedal assy. can be expensive for those.

Oct 26, 2012 | Ford F-350 Cars & Trucks

1 Answer

Engine idles but does not accelerate when pressing on the gas pedal?


what car is it? your car using carb or fuel injection

Jul 27, 2012 | 1995 Nissan Altima

2 Answers

I have 1999Chevy suburban with 6.5 turbo diesel motor.it idles up and down and when driving the gas pedal is real touchy Wat is the problem and were do i locate the problem


Check the help links related to this problem.Click the link below to go through its troubleshooting procedure :-----Idles rough and quits when gas pedal is pressed less? http://technoanswers.blogspot.in/2012/01/1999-ford-f-150-idles-rough-and-quits.html---------
Car won't start without hitting the gas pedal? http://schematicsdiagram.blogspot.com/2011/12/car-wont-start-without-hitting-gas.html
-------Complete loss of brake pedal then all gets normal? http://repairhelpcenter.blogspot.com/2012/01/complete-loss-of-brake-pedal-then-all.html
------Car dies when gas pedal is pressed? http://schematicsdiagram.blogspot.com/2011/12/car-dies-when-gas-pedal-is-pressed.html
--------Pushing on the gas pedal, but the car slows down? Gas pedal to the floor and the car slows down?

http://technoanswers.blogspot.in/2012/02/pushing-on-gas-pedal-but-car-slows-down.html

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After replacing brake rotors and pads, brake pedal remains on floor? http://technoanswers.blogspot.in/2012/02/after-replacing-brake-rotors-and-pads.html

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accelerator pedal sensor? http://technoanswers.blogspot.in/2012/02/2009-chevy-impala-accelerator-pedal.html

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For rough idle issues and problem troubleshooting,go through the help links provided below :----- van idles rough?

http://howtobyme.blogspot.in/2012/01/2004-ford-freestar-van-idles-rough.html

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will not idle when cold?

http://technoanswers.blogspot.in/2012/02/ford-explorer-40-will-not-idle-when.html

----------
runs lean and idles rough?

http://technoanswers.blogspot.in/2012/02/ford-runs-lean-and-idles-rough.html

-----------
Engine stumbles coming off idle when warm?

http://repairhelpcenter.blogspot.com/2012/01/engine-stumbles-coming-off-idle-when.html

------------
Erratic idle on car?

http://schematicsdiagram.blogspot.com/2011/12/erratic-idle-on-car.html

----------
Low idle when cold out side?

http://repairhelpcenter.blogspot.com/2011/12/low-idle-when-cold-out-side.html

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Idle Air Control (IAC) Valve Replacing?

http://schematicsdiagram.blogspot.com/2011/12/gmc-idle-air-control-iac-valve.html

----------
Engine quits at idle?

http://repairhelpcenter.blogspot.com/2011/10/engine-quits-at-idle.html

------------
Car overheats and Air blows hot at idle?

http://howtobyme.blogspot.com/2011/11/car-overheats-and-air-blows-hot-at-idle.html

------
While stop engine idles like cylinder missing?

http://schematicsdiagram.blogspot.com/2012/01/while-stop-engine-idles-like-cylinder.html

---------

This will help.

Thanks.

Mar 01, 2012 | 1999 GMC Suburban

1 Answer

Car shut down when foot not on the accelerator


For this types of problem,there are few help links.I suggest you to click the link below and go through the troubleshooting procedure :-----Car only starts when gas pedal is pressed? http://technoanswers.blogspot.com/2012/01/car-only-starts-when-gas-pedal-is.html-----------Car won't start without hitting the gas pedal? http://schematicsdiagram.blogspot.com/2011/12/car-wont-start-without-hitting-gas.html
----------Complete loss of brake pedal then all gets normal? http://repairhelpcenter.blogspot.com/2012/01/complete-loss-of-brake-pedal-then-all.html
----------Car dies when gas pedal is pressed? http://schematicsdiagram.blogspot.com/2011/12/car-dies-when-gas-pedal-is-pressed.html
--------------Pushing on the gas pedal, but the car slows down? Gas pedal to the floor and the car slows down? http://technoanswers.blogspot.in/2012/02/pushing-on-gas-pedal-but-car-slows-down.html
-------------Idles rough and quits when gas pedal is pressed less? http://technoanswers.blogspot.in/2012/01/1999-ford-f-150-idles-rough-and-quits.html----------This will help.Thanks.

Feb 02, 2012 | 2002 Toyota Camry

2 Answers

4 cyl Engine starts and idles ok...give it throttle and it dies


I need to get a clear mental picture of what exactly is happening.

With this said, you stated that the car "runs fine" until warmed up.

Q: When you start the car when cold it idles fine?
Q: If you allow the car to idle until "fully" warmed does the car stall?
Q: As the car begins to warm up, Does the RPM fluctuate abnormally?
Q: Does the car Only stall when you press on the gas pedal or does it stall just sitting and idling in addition to pressing the gas pedal?
Q: If you can drive it while cold does the car stall during acceleration when warm or only at Stop Signs / Lights?
Q: If you wait 20min or so, can you start the car again?
Q: How many miles are on the car?

Mar 27, 2009 | 1995 Toyota Camry

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

96 GMC Vandura idle problem and sometimes acceleration problem


accelerator pedal position sensor/ throttle position sensor/ motor
idle problem under load could be idle rpms too low
ICT sensor
run the fault codes

Apr 24, 2017 | GMC Vandura Cars & Trucks

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