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P0507 Diagnostic Trouble Code Discussion for July 2007

Idle Speed Higher Than Expected

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Trouble Ticket Help Requests for DTC P0507
Help Request Posted
2003 Mazda Miata 1.8L Poor Idle Quality, MIL Lamp on VIN: JM1NB353X3
P0507: Idle Control System RPM Higher Than Expected. Codes p0507 idle air control system RPM higher than expected and p0850 park nutral input circuit and it stays on high idle. Continuity test on orange and violet/red wire to ECU from IAC is fine. 10.7 ohms on valve. Are you seeing thease valves going bad? Any o...
July 18, 2007