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1994 Mercury Grand Marquis Problems

Find the most common issues based on 1994 Mercury Grand Marquis owner complaints.

Most Common 1994 Mercury Grand Marquis Problems

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....
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 engine may overheat at idle when the AC is on. A new, upgraded fan motor and resistor may be required to correct this concern.
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0 Known 1994 Mercury Grand Marquis Brakes Problems

1 Known 1994 Mercury Grand Marquis Drive Train Problem

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....

1 Known 1994 Mercury Grand Marquis Electrical & Lights Problem

The engine may overheat at idle when the AC is on. A new, upgraded fan motor and resistor may be required to correct this concern.

2 Known 1994 Mercury Grand Marquis Engine Problems

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...

0 Known 1994 Mercury Grand Marquis Exhaust & Emissions Problems

0 Known 1994 Mercury Grand Marquis Heating & Air Conditioning Problems

0 Known 1994 Mercury Grand Marquis Maintenance Problems

0 Known 1994 Mercury Grand Marquis Miscellaneous Problems

0 Known 1994 Mercury Grand Marquis Suspension & Steering Problems

4
Known 1994 Mercury Grand Marquis Problems & Complaints

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 engine may overheat at idle when the AC is on. A new, upgraded fan motor and resistor may be required to correct this concern.
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....
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...
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