Huge win for car owners! All TSBs to be made public. The Center for Auto Safety just made the NHTSA (US Government) make public the full text of all TSBs from now on. They are the same organization that has petitioned the NHTSA & filed lawsuits to protect car owners over exploding gas tanks & other major safety issues. Whenever you drive in your car, you are safer thanks in part to a lot of work over the years by this small but very effective consumer advocacy group.

Please take a moment & say thank you by donating $5 or whatever you can to the Center for Auto Safety.


really awful
Typical Repair Cost:
Average Mileage:
105,012 miles
Total Complaints:
1 complaints

Most Common Solutions:

  1. drill out and insert threaded insert (1 reports)
2000 Mercury Grand Marquis engine problems

engine problem

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2000 Mercury Grand Marquis Owner Comments

problem #1

Dec 022010

Grand Marquis LS 4.6L V8

  • Automatic transmission
  • 105,012 miles


The problem occurred 3 times (2010, 2014, 2014), each time a different cylinder. One of these times, it occurred to my wife 140 km away from home. I had to guess that it was a blown spark plug and instructed her to drive the car to Toronto in this condition.

Concern: Aside from the costly repair, I am afraid to use the car on a long trip for fear that this will happen at a place where a repair is not available.

I suspect that the Ford company has modified the engine along the way, considering the fact that on a previous model I had owned for a long time (1993 Grand Marquis), the problem had never occurred.

- , York, ON, canada

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