NHTSA — Engine And Engine Cooling Problems


hardly worth mentioning
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
66,812 miles

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

2001 Mercury Grand Marquis engine problems

engine problem

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2001 Mercury Grand Marquis Owner Comments

problem #6

Apr 072011

Grand Marquis 8-cyl

  • 164,200 miles


While driving my 2001 Mercury Grand Marquis I heard a noise from the engine compartment immediately the engine sounded very loud as if there was an exhaust leak, the engine started running very rough and the check engine light came on, after checking found that the rear spark plug on the right side of the engine had been blown out of its socket and it broke the ignition coil, gas would spray out of the spark plug cavity creating an unsafe condition, I had to buy a repair tool kit and a new coil and spark plug to repair the problem because the dealer (nick mayer in West lake, Ohio would not fix it even though I only had the car for 6 days, they said that it was a used car with no warranty so they would not work with me, it ended up costing me over $100 to fix a problem that the dealer or manufacturer should had been force to correct.

- Elyria, OH, USA

problem #5

Oct 152008

Grand Marquis

  • 92,374 miles
Temp gauge is not connected. I recently had to have the replace the intake manifold and the shop informed me that there was nothing to connect it to.

- Little Rock, AR, USA

problem #4

May 062008

Grand Marquis 8-cyl

  • 124,301 miles
Small piece of plastic from intake went into the cylinder #4 and rapped around one of the values causing this value to stay open so cylinder #4 has no compression.

- Carrollton, GA, USA

problem #3

Mar 012005

Grand Marquis 8-cyl

  • Automatic transmission
  • miles


The head gasket on the consumer's 2001 Mercury Grand Marquis leaked oil. The problem was caused by metal chips left between the head gaskets and block.

- Wyckoff, NJ, USA

problem #2

Feb 012005

Grand Marquis 8-cyl

  • miles
Re: defect in the Ford motors, Inc. Engine produced at romeo engine plant, romeo Michigan. The vehicle leaked oil out of the right, rear area of the head near the valve cover. Six months prior, the consumer's wife smelled oil burning. The consumer stated that he changes his own oil, and never noticed an oil leak.

- Ridgecrest, CA, USA

problem #1

Dec 152001

Grand Marquis

  • Automatic transmission
  • 20,000 miles
Consistent problem with turn signal and air-conditioning malfunction. Fuse blows-no turn signal or air conditioning. Possible electrical problem and safety/fire hazard. Cerame dealership in St. Louis, mo has not been unable to locate the problem. Dealership service has replaced one wire and a sensor. Problem still exists. Taking vehicle back to dealership to resolve 6/23/03.

- Florissant, MO, USA

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