Modded Mustang Forums banner

1 - 9 of 9 Posts

·
Registered
Joined
·
25 Posts
Discussion Starter #1
Sometime when i start the car, it tends to idle up to 2 grand or between shifts when the clutch is in, the idle air control valve an a vaccum line has been replaced to fix the problem didnt fix...need some help thanks,
 

·
PSN alphadong11
Joined
·
28,936 Posts
When you start the car and its cold the car will hold a high rev on purpose for a while in warm up mode.

You can check to see if it is a vacuum leak by spraying carb cleaner around vacuum lines and gaskets.
 

·
Free Mouth Hugs
Joined
·
9,037 Posts
Did you go through the steps in the sticky also?


Mine does the high idle after i drive on highway, But i parked it for the year.
 

·
Registered
Joined
·
1,527 Posts
mine only did it because I had a bad fuel pump and It would only do it at the end of warm up mode. then changed the fuel pump to a 255 walbro and now I didn't have to worry but if it does that when you first start up then its the idle air control valve a vaccum leak and the egr valve or the tps also try to pull out as many codes out as possible
 

·
Registered
Joined
·
142 Posts
Make a new iac retaining gasket with felpro 3157 gasket paper. Leave the hole on the air intake side 5/8 but on the engine side make it 5/16 this has fixed 2 of my stangs
 
1 - 9 of 9 Posts
Top