High idle speed on 1994 Cadillac Seville

My mechanic can't seem to fix the idle speed. He's put in plugs and wires. He's set it to specs. I mean he has all the code readers and tools and knowledge. Could this be the O2 sensor?

by in Irving, TX on February 15, 2010
1 answer
ANSWER by on February 15, 2010
check all the sensors like the tps, iac and make sure it doesnt have a vaccuum leak
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