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2000 Mercury Grand Marquis Engine Problems

19 TrueDelta members own (or used to own) a 2000 Mercury Grand Marquis. 8 of these members (42.1%) have reported engine repairs for their car. A total of 12 engine repairs to 2000 Mercury Grand Marquiss--an average of 0.6 per vehicle--have been reported.

See our lemon odds and nada odds page to see vehicles with no repairs or vehicles with more than three repairs. To see how frequently 2000 Mercury Grand Marquis problems occur, check out our car reliability stats.

Percentage of 2000 Mercury Grand Marquis repairs by problem area

Chart based on 26 repairs.

2000 Mercury Grand Marquis engine repair cost distribution

Chart based on 9 repair trips. The repair cost chart excludes repairs made under warranty, do-it-yourself repairs, and repair trips that include maintenance.
Non-members can see only ten 2000 Mercury Grand Marquis repair histories. Log in or join us to see them all.

2000 Mercury Grand Marquis

Engine not specified

76000 mi US $20 misfiring and stuttering while driving. replaced spark plugs, didn't help. Ordered TOSP coils from Amazon for $45. 
78000   replaced top of spark plug coils, all is fine now. 
136000 US $200 thermostat 

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2000 Mercury Grand Marquis 4dr Sedan

215-horsepower 4.6L V8 4-speed automatic RWD

170000 mi US $100 Misfire. Water in plug well, replaced plug boots and two coils. 
176000   Bad idle, replaced IAC, didn't solve problem. Traced issue down to malfunctioning coil-on-plug. 
177000   Bad coil, same one replaced again. 
159000 US $300 Intake manifold developed hairline crack. Replaced intake manifold. 
152000 US $100 Heater core leaking, had to remove dash and replace inexpensive part. Labor was insane, glad to have a friend to help. 
177000 US $230 Install two (2) new mufflers 

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2000 Mercury Grand Marquis 4dr Sedan

200-horsepower 4.6L V8 4-speed automatic RWD

68000 mi US $50 Replaced faulty IAC valve 
87000 US $107 Belt tensioner pulley failing; was replaced. 
124000   Oil gauge showing no oil pressure. Oil pressure sensor/switch replaced. 

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