I had this issue on my g35 sedan... took me a year visits to the dealer and had everything changed... i also had an overcooling issue see if u have dat too. now in the end they replaced my ecu, ecm and all da wiring and now its fine again

 

I have an 08 6MT. Had the RPM problem. Whenever I came to a stop, the RPM would drop from idle (850) to around 600, almost stalling, go up to 1000, then back down to idle.

Took it to the dealership, they had the car relearn idle, didn't work. Then found the problem, which was the valve timing cover. Replaced it and it's been perfect every since.

Ask them to check the valve timing cover.
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yes valve timing cover i ITS A TSB ON THE 08 cant believe the dealer did not look at the tsb list this is a common problem .................

 

thank you guys =) ...

 

Ahmed I agree with you about the dealership in Bahrain, they do suck and they dunno what they're talkin about.

I had the same issue b4, RPM jumping up and down during idle and wen comping to full stop. Took it to the dealer here and it was a Throttle Body issue, it was dirty. They cleaned it and been fine since then. I installed my GEN 3 intakes and i got the problem again.

Im living with it, since the stealership refused to clean my Throttle chamber becuz of the after market intake.

If you go to the dealership again, try to talk to there service manager. He doesnt know anything but hes nice and helpful. Tell him there are other cars that had the same issue here, and they've been fixed b4

Hope this helps dude.

 

I had this problem on my Altima and I replaced both the Camshaft/Crankshaft Position Sensors and no more issues. If you can get it to an autoparts store that can tell you what the CEL is for then they can pinpoint it. Just sounds exactly like what the Altima was doing. DIY and you will save a ton o money. Both of them cost me $60 and about 20 minutes. Good luck man!

 

i had the same poblem 3 weeks back , you need to open the throttle body and clean it, and clean the air filters too, this what i did and now zero crazy RPM.

 

Thank You All for helping =)...

 

Guys,

i had just clean the throttle body...and the air filters !!! but my problem has not been fixed =) ....

What To Do !?!?!

 

.............. =( ?

 

Any update ?