1992 Mercury Grand Marquis Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 1992 Mercury Grand Marquis
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1992 Mercury Grand Marquis ProblemsOxygen Sensor May FailTransmission Failure 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.
1992 Mercury Grand Marquis QuestionsI had my merc a/c serviced, new radiator, thermostat, flushed ,new antifreeze . (1 answer)
flushed heater core seems to flow normal. Cannot get warm air at any time, unless drive 50 miles. then get a little heat "HELP"