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P1504 Diagnostic Trouble Code Discussion for January 2005

Idle Air Control Solenoid Circuit Malfunction

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Trouble Ticket Help Requests for DTC P1504
Help Request Posted
1997 Mazda 626 DX 2.0L Poor Idle Quality VIN: 1YVGE22C3V
P1504: Idle Air Control Solenoid Circuit Malfunction. we tuned the car up with spark plugs, distributor cap & rotor, changed the timing belt. afterwards, we had very poor idle control, vehicle will surge up & down, when setting at a stoplight. the vehicle was then checked for the idle air valve, resistanc...
January 06, 2005