1991 Ford Crown Victoria Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 1991 Ford Crown Victoria
- EVP Sensor Failure May Cause Drivability/Fuel Economy Issues
- Police/Fleet/Natural Gas Models May Experience Lower Ball Joint Wear
- Throttle Position Sensors May Fail and Cause Engine Performance Problems
- Problem With Idle Air Bypass Valve May Cause Engine Performance Problems
- Intake Manifold/Valve Cover Gaskets May Leak Oil
- Can the plastic gears be replaced if a 1991 Crown Vic odometer/trip meter fail
- Ford 91 crown vic accelerate on own while driving cause ?
- The Air conditioning unit works fine but the heater does not and blows cold air.
- what should I look for if having difficulty putting shifter on park?
- Is the repair of the timing chain costly?
1991 Ford Crown Victoria Problems
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.
Certain police, fleet, and natural gas models may experience lower ball joint wear, requiring replacement of the front ball joints. Ford has issued a recall on certain vehicles for this condition. Please contact your local dealer for more information.
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.
1991 Ford Crown Victoria Questions
The speedometer still works okay. The trip meter failed first and then a few months later the odometer failed.
Replaced the thermostat and that works fine. So sign of leaks and replaced the heat relay switch.
car drives well. However when I stop, I sometimes can't get the shifter to park. the car rolls back or forward.