Problems for specific Mercury Grand Marquis years:

Car problem reports

Report A Problem

Problem with your car? See what our experts say or submit your own.

Newest reported 2000 Mercury Grand Marquis problems

 

Verified for the Mercury Grand Marquis

Bad spark plugs or an ignition coil can cause ignition misfire, which will illuminate the Check Engine Light.

3 Reports
Me Too

Verified for the Mercury Grand Marquis

A spring in the seat belt buckle may wear or fail, causing the airbag light on the instrument panel to illuminate. Failed buckles will require replacement.

33 Reports
Me Too

Verified for the Mercury Grand Marquis

The composite (plastic) intake manifold may crack near the thermostat housing and cause a coolant leak. Ford released an updated manifold that was reinforced to prevent a recurrence. No recall was issued for this problem but Ford did extend the warranty to seven years on some models from the date of purchase.

77 Reports
Me Too

Verified for the Mercury Grand Marquis

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.

28 Reports
Me Too

Verified for the Mercury Grand Marquis

An oil leak may develop from the the right side head gasket.  Oil from this type of leak will commonly drip onto the starter. Our technician tell us an updated head gasket is available to correct this concern.

9 Reports
Me Too

Verified for the Mercury Grand Marquis

The heater hose outlet may leak coolant at the back of the intake manifold. Sometimes this is misdiagnosed as a leaking intake manifold gasket because it resembles a leaking manifold.

20 Reports
Me Too

Verified for the Mercury Grand Marquis
Wear on the rear axle shafts near the bearings can create excessive play and lead to gear oil leaking past the seals. Gear oil will leak onto the brake backing plate, brakes, and wheels.
7 Reports
Me Too

Verified for the Mercury Grand Marquis
Transmission wear is common. Pieces of broken components are often discovered in the transmission oil pan when the transmission is serviced.
2 Reports
Me Too
Ask a Question