Question about 2002 Nissan Altima

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Altima Car starts fine but when you give it gas rpm's go up for about 2 seconds and then goes back to idle. Car does not die but won't accelerate. Turn the key off and start it back up and it does the same thing

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My both low beams headlight does not come on (2004 Altima). I replaced the bulb, checked the fuses. They all seem okay. I'm wondering if there are any other relays that I need to check. If it's in the harness then, I guess I'll have to bring it to the dealer. Hope not. Any suggestions?

Posted on Aug 25, 2008

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I have a 96 ford explorer, will start and idle fine , sometimes it will accelerate fine then I will loose RPM/speed and have to pull off road sputter out til it dies. press gas to raise rpm nothing


Try the fuel filter. If that is not a problem then the other thing I would suggest is to check the fuel pump. If the pressure is being lost in the fuel pump then your car will lose it's acceleration.

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2004 Lincoln aviator goes into gear but won't move


bad transmission maybe. Try going into a lower gear (2 or 1) and giving it a little gas and holding it there. (about 2500 rpm) Hold it there for about 30 seconds.
If it still doesnt move, look under at the side of the transmission where the shifter cable connects and make sure it is moving.
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1996 nissan altima


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4.3 L will not idel


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May 22, 2010 | 1992 GMC Safari

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Rough idle, dies when trying to give it gas


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Sep 09, 2009 | 1996 Nissan Altima

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My 2003 Nissan Altima won't accelerate. A friend told me to turn the car off and pull up on the gas pedal and try to start again which worked twice. The car will start and idle but acts as if the...


The accelerator is a potentiometer connected to a pedel and the wires go directly to the ECM. If the AWU( accelerator Working Unit) was bad the engine would run constant at 1800-200 rpm. Do any codes come up? I will do some more research and repost.

Aug 10, 2009 | 2003 Nissan Altima

1 Answer

2003 nissan altima rpm goes crazy (at 2 then drops to 0, back and forth)then it dies. it is doing it more frequently


I have also read in the service manual that doing an idle relearn helps with RPM problems. This is the procedure below. It is complicated to do unless you have a watch or something to count the seconds with.

DESCRIPTION
“Accelerator Pedal Released Position Learning” is an operation to learn the fully released position of the accelerator
pedal by monitoring the accelerator pedal position sensor output signal. It must be performed each time
harness connector of accelerator pedal position sensor or ECM is disconnected.
OPERATION PROCEDURE
1. Make sure that accelerator pedal is fully released.
2. Turn ignition switch “ON” and wait at least 2 seconds.
3. Turn ignition switch “OFF” wait at least 10 seconds.
4. Turn ignition switch “ON” and wait at least 2 seconds.
5. Turn ignition switch “OFF” wait at least 10 seconds.
Throttle Valve Closed Position Learning UBS002OA
DESCRIPTION
“Throttle Valve Closed Position Learning” is an operation to learn the fully closed position of the throttle valve
by monitoring the throttle position sensor output signal. It must be performed each time harness connector of
electric throttle control actuator or ECM is disconnected.
OPERATION PROCEDURE
1. Make sure that accelerator pedal is fully released.
2. Turn ignition switch “ON”.
3. Turn ignition switch “OFF” wait at least 10 seconds.
Make sure that throttle valve moves during above 10 seconds by confirming the operating sound.
Idle Air Volume Learning UBS002OB
DESCRIPTION
“Idle Air Volume Learning” is an operation to learn the idle air volume that keeps each engine within the specific
range. It must be performed under any of the following conditions:
 Each time electric throttle control actuator or ECM is replaced.
 Idle speed or ignition timing is out of specification.
PREPARATION
Before performing “Idle Air Volume Learning”, make sure that all of the following conditions are satisfied.
Learning will be cancelled if any of the following conditions are missed for even a moment.
 Battery voltage: More than 12.9V (At idle)
 Engine coolant temperature: 70 - 95ーC (158 - 203ーF)
 PNP switch: ON
 Electric load switch: OFF
(Air conditioner, headlamp, rear window defogger)
On vehicles equipped with daytime light systems, set lighting switch to the 1st position to light
only small lamps.
 Steering wheel: Neutral (Straight-ahead position)
 Vehicle speed: Stopped

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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?

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1 Answer

1995 pontiac bonneville stalls


I just went through lots of troubleshooting and expense on my 1996. Whenever I would lift my foot off the accelerator and was below about 30 mph, the rpm's would starts jumping around and sometimes it would stall. If I gave it a little gas (accelerator), I could sometimes keep it running. It also backfired once in a while. Starts right back up. Also, if I let it idle while in part, it would die after 1-2 minutes.

I ended up finding a hole in the fuel regulator. About a ~$70 part if you get an AC Delco, but very simple to change.

Nov 27, 2008 | 1995 Pontiac Bonneville

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