Idle adjustment?
Thread Starter
Burning Brakes
Joined: Mar 2007
Posts: 1,177
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From: Nor Cal
Idle adjustment?
Ok, I've read up enough to know that we cannot adjust our idles however I want to know what outside elements can cause a high idle? It hovers between 1200-1400 but only after initially starting at 850-900. (cold start = 900, first stop sign = 1400)
I did pull most of the vacuum lines when I fixed the firewall but I didn't see any bad hoses. Could the idle be caused by a line that loosened itself from bad installation?
I did pull most of the vacuum lines when I fixed the firewall but I didn't see any bad hoses. Could the idle be caused by a line that loosened itself from bad installation?
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Rennlist Member
Joined: Mar 2002
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From: Boulder, CO
High idle is usually a vacuum leak. Get a vacuum gauge and check your idle vacuum, and then cap off as many ports as you can to see if you can improve it. That's assuming you can't find a disconnected vacuum line from a simple inspection.
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Joined: Mar 2002
Posts: 6,921
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From: Boulder, CO
I suppose the IAC could stick open, they get pretty gunky. They can be finagled out from under the manifold and cleaned. You can use a 9v battery to operate it and make sure it is operating smoothly.
