Close

1998 Mercury Grand Marquis Questions

Get answers to questions about your 1998 Mercury Grand Marquis at RepairPal. Find solutions, diagnose problems and get back on the road.

Refine by vehicle
×
Choose your vehicle
No car image 94a1663db56199c5353592009e34aaa51078a2469bed068bb8d6f0ba43accf97
Get a Repair Estimate
Guaranteed by certified locations nationwide. Learn more
RepairPal estimates are guaranteed at over 1,700 quality certified locations nationwide. Learn more
93
questions

I bought the car & gas gauge read "full" 320 miles til empty. Well the gallons NEVER change & the miles til empty will start at 320 but once it gets to 270 it will reset back to 320. This morning it actually said 2 gallons til empty & 40 miles til empty. But when it got down to 37 miles til empty it reset to 51 miles...? Fuel sensor maybe?

how much would it coast to fix

Buy if I get it on hwy speed it seems to run ok

Noticed while driving home that my brake lights decided they didn't want to turn off. I've tried googling possible reasons but nothing seems to really lead me to an accurate answer.

I had checked it and i had#7 miss firing....now this week when I started the car....it started knocking

I changed the sway bar, ball joints what am I missing

when the car has been sitting cold, I have to pump the gas pedal several times for it to start .After it warms, it starts quickly without pumping. How do I correct this???

When I turn on my turn signals(either way), the flasher flashes irattically.Sometimes it's ok and then it will become irratic. Is this a problem with the control or the flasher?