Car Problem Reports

Ford Crown Victoria Problem With Idle Air Bypass Valve May Cause Engine Performance Problems

Ford Crown Victoria Problem
3 Reports
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Model Years Affected: 1990, 1991

Engine Affected: 5.0L V8


If you experience difficulty starting the engine when cold, stalling at idle, or hesitations during acceleration, it may be the idle air bypass valve. This valve helps the vehicle idle steady when the accelerator pedal is not pressed.

  • dstone, , 5.0L V8, 100,000 mi

    did not fix it yet cause i just found out what was causing this when i got on here but yes ,hesitate when taken off ,also hard two strart, also ruff idle.

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