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P1506 Diagnostic Trouble Code Discussion for November 2004

Idle Air Control System RPM Higher Than Expected


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Trouble Ticket Help Requests for DTC P1506
Help Request Posted
1997 Mercury Mystique GS 2.0L Poor Idle Quality, Surge, Stall, MIL Lamp on VIN: 1MELM6536V
P1506: iac overspeed. after codes erased, only lean code returned once. idle is erratic and surges, sometimes stalls, worse with defrost ac on. Cannot find throttle body plate position adjustment as someone has been there before, also maf wiring has been cut and plug replaced. Vehi...
November 16, 2004
1997 Mercury Mystique GS 2.0L Poor Idle Quality, Surge, Stall, MIL Lamp on VIN: 1MELM6536V
P1506: iac overspeed. after codes erased, only lean code returned once. idle is erratic and surges, sometimes stalls, worse with defrost ac on. Cannot find throttle body plate position adjustment as someone has been there before, also maf wiring has been cut and plug replaced. Vehi...
November 16, 2004