idle troubles...

1996mustangGT · Feb 7, 2008

so...whenever im at a stop now my car starts idling reeallly funny...
it will drop real low and then kick back up to where it normally idle's at..?
also when it drops down i mean it drops...if almost feels like i have a crazy cam in it or something.
so i have no idea whats wrong with it but the way ive abused it im thinking im gonna have
an engine swap coming soon....any ideas guys?
:TY:
timothy

N2Otorious · Feb 7, 2008

Sounds like your IAC(Idle Air Control valve) is dirty and needs to be cleaned. :thumb:

vermilion · Feb 7, 2008

have defrost on?

AaRoN · Feb 7, 2008

I agree. Sounds like the IAC.

moot09 · Feb 7, 2008

ya minedoes the same thing. i hope its the IAC wheres it located at?

AaRoN · Feb 7, 2008

moot09 said:
ya minedoes the same thing. i hope its the IAC wheres it located at?

It comes off the front of your intake plenum.

Jrgunn5150 · Feb 7, 2008

LIke a tiny pop can

atrainsgt · Feb 7, 2008

Mine does the same thing :rollinglaugh: Pretty sure its the IAC I just haven't got to it yet. Maybe tonight.

2REDSTANGS · Feb 7, 2008

I have that problem so to clean this IAC do you have to take it off? Just wipe it out while its on there? I have no idea on a techniqe to clean it advice would be awesome :TY:

Jrgunn5150 · Feb 7, 2008

I blast the crap out of it with Brakleen

atrainsgt · Feb 7, 2008

I just got done cleaning mine, I pulled it off and took a look at it, strange no carbon on it at all. So I sprayed it with some carb cleaner and wiped it out as best I could, shook it off then cleaned out the plenum hole with some carb cleaner, got quite a bit of carbon out of there. I will let you all know how it behaves tomorrow. Probably should clean my EGR also.

vermilion · Feb 7, 2008

id use carb choke cleaner. no residue. and clean your maf too with maf cleaner. on these cars its usually a combination of things other than just 1.

1996mustangGT · Feb 8, 2008

used carb and choke cleaner on it

helped it!
:TY: :TY: :TY:

atrainsgt · Feb 8, 2008

I couldn't tell much difference with mine except the idle never dropped down lower than it should, so I guess thats a good thing. The idle still likes to linger while cruising not sure what causes that. I got a few other things to clean out, I'm not worried about it.

Jrgunn5150 · Feb 8, 2008

atrainsgt said:
I couldn't tell much difference with mine except the idle never dropped down lower than it should, so I guess thats a good thing. The idle still likes to linger while cruising not sure what causes that. I got a few other things to clean out, I'm not worried about it.

Fords lame o IAC gasket causes hanging idle, there's a mod you can do to drop it quicker, search this forum. It's a few pages back.