High idling

2007 CHEVROLET COBALT
120,000 MILES • 2.2L • AUTOMATIC
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DIAMONDQUEEN36
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  • 1 POST
It idles too high unless I have it in park changed the maf sensor. The air intake seems fine so now I am lost as to what could be the problem.
Jun 6, 2016 at 1:24 AM
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HMAC300
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scan for codes and check fuel pressure with a gauge check for a vacuum leak hoses disconnected etc. auto parts rent gauge.

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator
Jun 6, 2016 at 7:27 AM