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View Full Version : Above average idling RPM's


nismo923
08-31-2013, 06:47 AM
As the title states, here lately my car has been idling much higher than what it should be. By much higher, I mean 2k-2.5k... It used to idle at about 800ish. It's bad enough that the other night it was revving high enough in overdrive that without ever touching the gas, it shifted into second...

Davidbecker
08-31-2013, 08:04 AM
vacumm leak? or possibly TPS?

nismo923
08-31-2013, 07:50 PM
Well, good news. My car seems to be idling like normal again. I'm just hoping it was a freak thing and won't happen again.

Davidbecker
08-31-2013, 08:34 PM
fingers crossed

kdm212
09-01-2013, 12:00 PM
did you do anything or make any changes to the car?

nismo923
09-01-2013, 05:36 PM
None at all.

kdm212
09-01-2013, 09:27 PM
None at all.

interesting, but it worked itself out?

nismo923
09-01-2013, 09:57 PM
So far, yes. It also did it to itself. Hence why I'm hoping it's just a freak thing.

kdm212
09-02-2013, 10:19 AM
gotta love that kind of wierd crap. sounds like it was a one time deal. fingers crossed.

nismo923
09-02-2013, 03:27 PM
Well, I think it might be back. Idk though.

xpbr2000
09-03-2013, 09:28 AM
check the codes. some codes will purposely idle the engine high as a open loop default

edit: oh wait your's is older than 96 isn't it?

if its intermittent i would start with sensors and wiring if it continues.

3.8blackmaro
09-03-2013, 10:00 AM
Could be a stuck iac valve.

nismo923
09-03-2013, 10:15 AM
Iac?

SlasherVRGR
09-03-2013, 11:18 AM
Idle air control. Round sensor on the throttle body, on the 3.4 its really easy to access and clean up. Mine was sticky on my 3.4 when I got it. I just replaced it however.

Its 2 torqs bits(sorry don't know how to spell that off hand) and that's it. Take that bad boy out and hold it so the electronics are up in the air and spray it with Carb cleaner. Also spray the port on the throttle body where it goes with Carb cleaner. Could be carbon build up.

Sent from my MB870 using Tapatalk 4

xpbr2000
09-03-2013, 11:35 AM
FYI its torx for the bit type. ;)

and I always forget about that damn IAC. but kyle and colton are right. it very well could be the IAC.

DarkHart
09-06-2013, 12:07 PM
I just had a problem with my IAC as some people in this thread know. It was just a freak thing for me too. I had changed and done nothing different to the car and one day my IAC valve just got stuck and didn't throw up any codes.