Mechanics

FAST IDLE

1992 Oldsmobile Cutlass • 6 cylinder 2WD Automatic • 80,000 miles

Olds cutlass supreme 1992 idling at 3000 rpm. Changed throttle position sensor, cleaned IAC valve, what next? TP sensor made check engine light go off and temperarily idle normally, next morning back to FAST idle.
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HNBROWN
January 13, 2011.




Block off the throttle-body mouth, if no reaction with rpms, false air getting in there from somewhere. Take the throttle linkage loose, any effect? Take the wiring connector loose from tps, any effect? Any applicable mil codes?

JDL
Jan 13, 2011.


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