Question about 1998 Pontiac Grand Am
1998 Pontiac Grand AM GT motor revs inadvertantly / increases speed and will not rev down. Happens in both summer and winter driving conditions. RPMS at 2500-3000 then will quit, and begin running normal. What could this be, a oxygen sensor?
It would not be an O2 sensor, period, they would never cause a high idle, have u had this checked for trouble codes? A sticking idle speed control air bypass can cause this problem as well as a throttle position sensor, but run the codes, Kragen does it for free was well as other parts stores.
Posted on Mar 10, 2009
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