Idle Problems

Quintb2000 · Aug 5, 2018

Hey guys

Ive searched and ive searched and searched. Absolutely nothing has fixed my problem. I have a loping idle and it will not go away.

Here is the list of things ive done...

Ive tried

Checking everything for vacuum leaks. Carburetor cleaner method - no leaks
Ive changed out the valve 2x Junkyard and brand new - disclaimer - the brand new one was cheap off amazon. Don't know if that matters
Ive reset the idle multiple times.
Ive let the car reprogram itself by pulling the backup fuse each time.

This is my daily and i gotta get this straight

Thoughts//

Nam1911a1 · Aug 6, 2018

What valve did you replace? The car has many valves.

CDsDontBurn · Aug 6, 2018

Nam1911a1 said:
What valve did you replace? The car has many valves.

I'm guessing the IAC valve, but you're right. We must verify what valve.

@ OP: what engine do you have? That's also important to know.

95Tech · Aug 7, 2018

Replace your EGR valve and clean the port holes going through it in the intake manifold. I also seen where the 2nd clutch pressure switch could cause sporadic idle issues.

CDsDontBurn · Aug 7, 2018

+1 on the EGR port / valve.

Didn't think of that.

Quintb2000 · Aug 18, 2018

Sorry. IAC valve. 4cylinder

Quintb2000 · Aug 25, 2018

Completely took down the intake manifold and cleaned it. Everything back together. Still lopes. Will reset the ecu and it does great for about 30 minutes then it comes back.