Check engine light on 1994 Oldsmobile Silhouette

My check engine light comes on/off. The vehicle is at 150XXX miles but the engine is not (new engine). Vehicle is slugish at times and needs a tune up but this would not call for the engine light coming on. Is this a preset command in the computer? How is this reset.

by in Fenton, MO on January 03, 2009
1 answer 1 comment
ANSWER by on January 05, 2009
Sounds like a failing oxygen sensor, sometimes weak oxygen sensors will make the check engine light go on and off.
COMMENT by on September 08, 2010
Also might try cleaning or replacing the Mass Air Flow Sensor
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