1999 Mercury Grand Marquis Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 1999 Mercury Grand Marquis
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1999 Mercury Grand Marquis ProblemsMisfire due to failed spark plugs or ignition coil
The engine may overheat at idle when the AC is on. A new, upgraded fan motor and resistor may be required to correct this concern.
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.
1999 Mercury Grand Marquis Questionstransmission slipping only 1, 2 and reverse and park work (1 answer)
the outside temp is stuck on 127 degrees can it be fixed?
Compass reads 180 degrees out of phase. It tells me the direction behind me not the direction in front.