1994 Mercury Grand Marquis Repair and Maintenance Costs
A guide to repairs, service, and maintenance costs for your 1994 Mercury Grand Marquis
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1994 Mercury Grand Marquis ProblemsTransmission Problems Common Due to Front Pump Failure
Transmission problems are common in this model, often as a result of a failed front pump. The pump loses its ability to create hydraulic pressure, which an automatic transmission needs to function. A sign of front pump failure can be a whine type noise.
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.
1994 Mercury Grand Marquis Questionsoil light comes on and off and engine rattles andhas blow back out of oil spout (1 answer)
every day all day but is full of uoil would this be a vacuum leak
When I'm riding down the road it will start Fallin on its face....Coms out of it after a bit or I hav to turn off and restart the car