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-   -   My idling is really weird.. (https://mustangboards.com/modular-4-6l-tech/13375-my-idling-really-weird.html)

mrbreeze2k5 05-12-2006 06:38 PM

My idling is really weird..
 
I bought a used mustang gt 02 with 60,000 miles on it. It has a very strange idle to it.. and I never owned a mustang before so I don't know if its number but the idle is really really low. it normal idles at 1,000 rpm and sometimes it drops to 500 and sounds like its about die and then goes back up to 1,000.

csledd 05-12-2006 08:16 PM

yeah.. shouldn't really do that, our cars have an annoying IAC (Idle Air Control) valve that likes to get dirty/go bad. I'd check into it.

I also have some weird idling issues but yeah.. lol

mrbreeze2k5 05-12-2006 09:20 PM

I'm a complete car idiot.... where is it located? maybe a pictures with a red circle around it? and is it easy to clean or get too?

mpowerstang 05-13-2006 06:35 PM


Originally Posted by mrbreeze2k5
I'm a complete car idiot.... where is it located? maybe a pictures with a red circle around it? and is it easy to clean or get too?

It's located on the front of your plenum, it has 2 bolts that hold in on, a plug on the round end of it and has a hose going from the intake tube to it....buy a new one, cleaning it is just a temp fix for it...you can get them from Autozone or Adavance for about $50. The new piece will come with a new gasket and it's not that hard to change.

All you need is an 8mm wrench for socket to take it off.

Hope this helps.

MattJ 05-13-2006 06:53 PM


Originally Posted by csledd
yeah.. shouldn't really do that, our cars have an annoying IAC (Idle Air Control) valve that likes to get dirty/go bad. I'd check into it.

I also have some weird idling issues but yeah.. lol

That might not be because of your stage 2 cams and valve springs, extensive moddifications and weird tune though, right?
lol

RedFirevert04GT 05-13-2006 08:41 PM

No way, it CAN'T be the cams and tune....never.

stage2roush2002 05-13-2006 10:46 PM

I have a 1999 Mustang GT and it did the same thing. It drops really low likes it is going to die but comes back up.... One of your sparkplugs are bad.<<<<Promise

mpowerstang 05-14-2006 06:50 AM


Originally Posted by stage2roush2002
I have a 1999 Mustang GT and it did the same thing. It drops really low likes it is going to die but comes back up.... One of your sparkplugs are bad.<<<<Promise

It's the IAC, do a search anywhere and you'll see that you have the same symptoms.

r3dn3ck 05-14-2006 08:55 AM

hunting idle is almost always IAC. Ultra low idle/ trying to die is usually a vacuum leak.

roushrider81 05-14-2006 09:37 AM

damn i got that same idle problem

Blk02stang 05-14-2006 09:49 AM

it's the IAC I just cleaned the one on my girls '00 gt about 45min ago and it runs perfect idling. Before it was doing the same at idle or sometimes cut off....1k-then die to 500 then rev back to 1k...now it's constant at 900.


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