1994 Cadillac Seville Q&A

1994 Cadillac Seville Question: High idle speed

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? -
Answer 1
check all the sensors like the tps, iac and make sure it doesnt have a vaccuum leak -
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