1999 MERCURY TRACER
54,000 MILES
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JOHN6619
  • MEMBER
  • 1 POST
I keep getting code 1504 and 1506. High idle. I read somewhere if u disconnect the IAC and there is no change in idle speed, it could be the problem? Its an awfully expensive part to guess. I can't find any vacuum leaks or obstructions.
Mar 14, 2013 at 11:39 PM
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