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P1506 Diagnostic Trouble Code Discussion for June 2004

Idle Air Control System RPM Higher Than Expected

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Trouble Ticket Help Requests for DTC P1506
Help Request Posted
1996 Ford Windstar GL 3.8L Poor Idle Quality, Surge, MIL Lamp on VIN: 2FMDA5149T
P1506: IAC overspeed error. ... misfire this morning (power braking it while I watched the 5100- secondary scope-. and when I was finished the vehicles Idle became abnormal, and eventually the p1506 was set. here's the deal, it Idles normally until the throttle is slightly cracked. then ...
June 02, 2004