1991 Ford Crown Victoria Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 1991 Ford Crown Victoria
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1991 Ford Crown Victoria ProblemsProblem With Idle Air Bypass Valve May Cause Engine Performance Problems
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.
The throttle position sensor (TPS) may fail. Common symptoms of a defective TPS can be rough idle, hard starting, hesitation on acceleration, poor fuel economy, and stalling.
The EGR valve position (EVP) sensor can fail on this vehicle. The EVP sensor measures the EGR valve position and transmits the date to the engine control computer. If it fails, drivability and fuel economy can suffer, the Check Engine Light will commonly illuminate.
1991 Ford Crown Victoria Questionsfreeze plug? (1 answer)
Car has a water leak at the back, underside, by the firewall, I think. I cant see it. I stopped driving it when it started leaking. I have decided to fix it. I noticed that the heater did not get warm this winter when I did start it up. One person said it was a freeze plug that went out, but I...
The speedometer still works okay. The trip meter failed first and then a few months later the odometer failed.
Then when break want to stall