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pretty bad
Typical Repair Cost:
Average Mileage:
155,333 miles
Total Complaints:
3 complaints

Most Common Solutions:

  1. replace intake manifold (3 reports)
1999 Mercury Grand Marquis engine problems

engine problem

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1999 Mercury Grand Marquis Owner Comments

problem #3

Nov 042008

Grand Marquis GS 4.6L

  • Automatic transmission
  • 88,000 miles


I had to have to replace the intake manifold after only about 88000 miles. This car ran really beautifully after that for 8 years up to 128,000

- , Baltimore, MD, USA

problem #2

Jun 102016

Grand Marquis 4.6L

  • Automatic transmission
  • 300,000 miles

this mercury grand marquis engine intake is made of cheap part that will not last and it cost is very expense. and cost is high the company need to fix all the repair not the owner.

- , Tulsa, OK, USA

problem #1

Jul 022009

Grand Marquis LS 4.6L

  • Automatic transmission
  • 78,000 miles

Ford - Mercury changed away from a metal intake manifold to a plastic manifold to save manufacturing costs.They are now reaping service revenue because they are charging non-fleet consumers a hefty $1,500. to replace the defectively designed part. There was a court case which they settled, but it excludes claims after March 2006. For low mileage drivers this was not long enough for the part to fail. But fail it will at approximately 75,000 miles. I'll certainly consider this next time I buy, which will be very soon...

- , Alexandria, VA, USA

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