Ok guys I just got my alternator replaced and the shop left my car in the bay overnight with the battery disconnected... I notice sometimes while at a light or stopped, the idle rises from the usual 650 to about 850 - 900 and sometimes stays there! This has got me worried, I also readjusted the installation of the Injen CAI, why would my IDLE go up like that, and then sometimes gradually come down???

 

a friend of mine had the same problem with her 88 jimmy. She took it to a mechanic and he replaced some vacum and the car was fine after that.

 

Wouldn't you hear a Vacuum leak, what else can it be? And it only happens on occassions, so I'm thinking maybe something else I don't know...? I'm worried.

 

I checked it and listened for things this morning under the hood I couldn't see or hear anything suspicious any other ideas?

 

Sounds like the exact same problem I started having after I removed my intake to work on the starter. While I was in there I cleaned the throttle body, and the wierd idle started. I don't know if taking off the intake created an air leak that I never had, or cleaning the throttle body did something. That seems odd since cleaingn the TB is supposed to IMPROVE your idle, but, oh well...

I tamed my idle as of yesterday by disconnecting the throttle positioning sensor and backing out the set screw on the throttle body. That, unfortunatley, seems to have created a very sensitive throttle response, which I'm not happy with. I will continue to work on this and post my results. Hopefully someone on this board can shed some more light on the idle issues related to these enginges.

See my thread here:

http://www.forums.maxima.org/showthr...=1#post3454552

Greg