Question about 2003 Nissan Altima

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2003 altima keeps throttling up and down on idle motion but stop when you put the car in drive

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Need idle relearn or throttle chamber

Posted on Jun 26, 2009

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Posted on Jan 02, 2017

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The car hesitates when idling or stopped at light/ stop sign, and the rpm drops to zero then goes back up.


The battery was a red herring - it would not have anything to do with the problem.
Faulty spark plugs could cause a miss but probably not make the engine stall.
What you described is a classic example of a faulty idle air control valve or a dirty throttle body. The computer controls idle speed by regulating how much air enters the intake. It opens the control valve to raise idle speed when necessary.
I would check the control valve and the throttle body.

Sep 27, 2012 | 2003 Nissan Altima

3 Answers

My 2005 altima idles high and engine code


This P0507 code is one that's sometimes triggered on vehicles that have electronic throttle control. That is, they don't have a regular throttle cable from the accelerator pedal to the engine. They rely on sensors and electronics to control the throttle. In this case, the P0507 DTC (diagnostic trouble code) is triggered when the PCM (powertrain control module) detects an engine idle speed that is greater than the desired (pre-programmed) RPM. In the case of GM vehicles (and possibly others) if the idle speed is over 200 rpm higher than expected, this code will be set.

Jun 07, 2010 | 2005 Nissan Altima

2 Answers

2003 Nissan Altima stalls at intersections/ stops


sounds like your carb is getting to much air some where check your hoses

Sep 20, 2009 | 2003 Nissan Altima

3 Answers

Vibration on 2003 Altima 2.4


first check motor mounts ,them put in drive with the a/c on if you feel vibrates check the alternator some times have vibration and the mechanic made the mistake and change the pully.

CHECK THE ALTERNATOR

Jun 30, 2009 | 2003 Nissan Altima

1 Answer

Idle jumping up and down


MAKE SURE WHEN YOU PLUGGED THE SPARK PLUGS IN THAT YOU GOT THEM IN THE RIGHT FIREING ORDER,ALSO MAKE SURE THAT YOUR THROTTLE BODY IS OPERATING NORMALY WATCH IT WHILE THE CAR IS RUNNING TRY MOVING THE THROTTLE BODY ROD BY HAND

Mar 07, 2009 | 2003 Nissan Altima

2 Answers

Car keep shutting down


SOUNDS LIKE THE IDLE AIR VALVE IS CARBONED UP TRY SPRAYING CARBURETOR CLEANER INTO AIR INTAKE AT THE THRUTTLE BODY WHILE HOLDING IDLE SPEED AROUND 1500 TO 1900 RPMS USUALLY AFTER SPRAYING FOR SEVERAL MINUTES ABOUT HALF A CAN THE PROBLEM WILL BE FIXED ...IF THIS DOES NO GOOD YOU MAY HAVE TO TAKE IT TO THE DEALER TO HAVE THE IDLE SPEED REPROGRAMED IN THE ECM WITH THE DEALERS DIAGNOSTIC SCAN TOOL....USUALLY FOR AROUND 50 TO 60 BUCKS HOPE THIS HELPS

Oct 01, 2008 | 2001 Nissan Altima

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