Idle Problems

Discussion in 'URGENT - Help Quick!' started by Quintb2000, Aug 5, 2018.

  1. Quintb2000

    Quintb2000 Member

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    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//
     
  2. Nam1911a1

    Nam1911a1 Well-Known Member

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

    CDsDontBurn Well-Known Member

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    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.
     
  4. 95Tech

    95Tech Member

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    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.
     
  5. CDsDontBurn

    CDsDontBurn Well-Known Member

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    +1 on the EGR port / valve.

    Didn't think of that.
     
  6. Quintb2000

    Quintb2000 Member

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    Sorry. IAC valve. 4cylinder
     
  7. Quintb2000

    Quintb2000 Member

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    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.
     
  8. Nam1911a1

    Nam1911a1 Well-Known Member

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    How is fuel delivery?
     

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