2000 Mercury Grand Marquis Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 2000 Mercury Grand Marquis
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2000 Mercury Grand Marquis ProblemsThrottle Position Sensors May Fail and Cause Engine Performance 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 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.
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.
2000 Mercury Grand Marquis QuestionsEvery day I have to jump start my car (2 answers)
No crank no start just a clicking noise from starter once it starts it's fine till the next day
What cause my battery to drain down when I activate the factory alarm system?