1991 Mercury Topaz Repair and Maintenance

A guide to problems, costs, maintenance and repair for your 1991 Mercury Topaz

1991 Mercury Topaz Problems

Engine Cranks, but will Not Start - No Fuel Pressure

Fuel pump failure can cause the engine to crank but fail to start. Diagnosis will show insufficient, or no fuel pressure, and fuel pump in the fuel tank will need to be replaced.

Speedometer Operation Affected and Poor Transmission Shift Quality

The vehicle may lose vehicle speed signal, which can affect speedometer operation and transmission shift quality. Most often the Vehicle Speed Sensor is faulty, however, at times, the driven gear inside the transmission is at fault. Replace the Vehicle Speed sensor and inspect the driven gear upon sensor removal.

Knocking Noise or Lifting Sensation on Acceleration

Poor rubber material used in the motor mounts can cause them to fail, leading to a knocking noise or lifting sensation on acceleration. The motor mounts will need to be replaced with revised parts.

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