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Old 08-10-2018, 11:34 PM   #9
Medtactics
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Join Date: Apr 2016
Location: Delton, MI
Posts: 402

1999 SC2
Default Re: Intermittent vacuum leak

Well IACV would explain rough idle, but the 3k-4k rpm not so much after taping the throttle as the only user input, stop-start dosen't do anything besides skip the rough idle and goes straight to 4krpm without any input. I also already confirmed with the sensor output log before hand that TPS is functional either way.

Can a faulty IACV even do 4k idle at max bypass (completely open)?
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Late 99 SC2 2.5 Gen, 237k miles

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