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GST High Idle

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FallenKing

10+ Year Contributor
84
4
Jul 17, 2012
Columbia, Missouri
Symptom: Idles at steady 1900

What I know about the car: Had motor swapped. No Cruise. No AC. Egr Delete

What I've already tried: Cleaned MAF sensor. Fixed Boost Leaks. Put on correct EGR. Bought new Idle Air Controller. Changed out Spark Cables.

Any ideas?
 
Listen to the engine for a hiss sound around the intake.

Best way to find exactly where a vacuum leak is spraying carb cleaner on a cold running motor

Best way to find the exact spot of the leak if that doesn't work is to use a 2ft long piece of 3/8 hose, stick one end in your ear and hold the other end to different points of the engine to find the hiss of a vacuum leak
 
I'll try a temp sensor next. No more boost leak I did the old soapy water trick, everything is good to go. @TermTrky I doesn't surge. just idles at 1900, but it's making noise as if it's idling at 4K LOL.
 
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