Major RPM fluctuation

Asked by Feb 12, 2016 at 09:13 PM about the 2011 Chevrolet Malibu LT

Question type: Maintenance & Repair

I have a 2011 Chevy Malibu and every time
we start the car the RPM flucates between
900 and 1500 it lasts for 1.5 mins and its
beginning to affect drivability. I have heard
that it could be IAC but 3 different
mechanics have told me it's doesn't have
IAC and now I was told it could be TPS
(throttle position sensor) there is no check
engine light on so its hard to diagnose. Any
thoughts?

1 Answer

5,865

any chance you have sprayed the mass air flow sensor down with the proper cleaning fluid? that may clear it up for you

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