1999 Mercury Grand Marquis Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 1999 Mercury Grand Marquis
1999 Mercury Grand Marquis Problems
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.
The car had 64600 miles on it and the headlights started going out while driving, which can be very dangerous. The problem is in the Light Control Module which is an expensive part (around $500 to $600 + labor).
A spring in the seat belt buckle may wear or fail, causing the airbag light on the instrument panel to illuminate. Failed buckles will require replacement.
1999 Mercury Grand Marquis Questions
My headlights, dome light, and turn signals do not work. All other electrical functions are fine.
I just want to know which fuse to pull to temporarily solve the issue. Thank you.
this problem started in 2008 when the car wad repaired after an accident. nobody seems to be able to find the problem. they replaced fuses. my hazard lights work fine.
1999 Mercury Grand Marquis Recalls
1999 Mercury Grand Marquis Reviews
Best car I ever had (and I had over 30 so far). Bought it used with 163,000 miles, and it drives way better than anything else I know.
1999 GRMARQUI Have TEPID HEAT.. Have changed thermastat flushed out heater core Still very LOW heat
Got my car 2nd hand at 120,000 miles. Just got 270,000 miles on it last week, avg 550 miles a week to work and back home. THe problems i have had are cracked intake manfold (plastic), air compressor, ac/hvac control mod ($500 new, $50 savage), and need to replace rotors (still first set). One coil pack to the spark plugs went bad, still drove on 7 cylinders (till i mad to to the shop). Still...