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Murdered0utGC 08-05-2012 09:01 PM

Really low idle, not sputtering or dying?
Hey guys , I have a 96 GC Limited with the 5.2 in it, and when I start it up, it starts perfect, but once I start going, whenever I stop at a stop sign or a light, it idles at like maybe 300-400 rpms? the very first line on the tachometer above zero. It NEVER dies, NEVER sputters, idles just perfect. Is this something I should be worried about?

plafranx 08-06-2012 02:33 AM

Try cleaning your idle air controller (IAC) and throttlebody. Mine Idles perfectly now.

Grand_ZJ 08-06-2012 02:58 AM

^ I agree. Usually a low idle problem is a case of a dirty TB.

iser 08-06-2012 09:17 AM

seafoam. i am a believer.

Murdered0utGC 08-06-2012 09:34 PM

Thanks for the responses guys, Ill get to it tomorrow and let you know how it goes!

plafranx 08-07-2012 01:13 AM


Originally Posted by iser (Post 13977664)
seafoam. i am a believer.

^ Agreed. Since you're seafoaming, might as well put some in the crankcase and change your oil afterwards. I use an aerosol bottle on the throttlebody for ease.


Originally Posted by Murdered0utGC (Post 13981087)
Thanks for the responses guys, Ill get to it tomorrow and let you know how it goes!

FYI You need a T-20 (Torx bit #20) socket to remove your IAC.
Hope it solves your problem so you can move on to the next of hundreds.


Murdered0utGC 08-31-2012 08:07 PM

Just an update, I used the Aerosol seafoam and it worked like a charm! I am now a seafoam believer, hasn't died on me since! thanks for the help guys!

Darman 09-02-2012 11:44 AM

mine idles around there. i clean the IAC and seafoamed. still idles there just fine. if i let off the brakes a little bit itll start to shutter forward. like i can feel every piston firing.

Myusername1674 09-03-2012 03:58 PM

Mine idles really low to, in park at around 500, and stopped in drive around 200-300. I need to do a tune up soon, never cleaned my IAC but have seafoamed through the brake hose line. Maybe I'll seafoam again just everywhere :thumbsup:

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