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Author Topic: Strange oscillating high/low idle when hot  (Read 2744 times)

lagwagon

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Strange oscillating high/low idle when hot
« on: May 05, 2014, 08:20:36 AM »

Is anyone else having the issue where once you drive the car hard/get it hot the idle is inconsistent? My idle will go from 800, hold for a few moments, then jump up to 1200-1500 for a few seconds, and drop down again. Its really bizarre. It only happens when the car is hot. Does not improve when I turn off the O2
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Profile36

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Re: Strange oscillating high/low idle when hot
« Reply #1 on: May 05, 2014, 12:03:25 PM »

I would check the following in this order,

vacuum leaks (pressure test)
throttle body spring, idle screw, throttle cable
TPS
ICV
MAF
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