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.

10.0

really awful
Typical Repair Cost:
No data
Average Mileage:
198,200 miles
Total Complaints:
1 complaints

Most Common Solutions:

  1. not sure (1 reports)
1998 Mercury Grand Marquis AC / heater problems

AC / heater problem

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1998 Mercury Grand Marquis Owner Comments

problem #1

Feb 032015

Grand Marquis LS 4.6L

  • Automatic transmission
  • 198,200 miles

A D V E R T I S E M E N T S

I HAVE HEATING PROBLEMS WITH MY 1998 GRAND MARQUIS. IT HAS BEEN RUNNING HOT AND BOILING THE WATER OUT. I TESTED AND FOUND IT HAD A SMALL LEAK IN THE DRIVER SIDE HEAD GASKET. I BOUGHT SOME GASKET SEALER AND PUT IT IN ACCORDING TO THE DIRECTIONS AND IT HAS NOT RUN HOT BUT THE HEATER WILL HEAT AT TIMES AND THEN QUIT AND START BACK AGAIN.

ANYONE HAVE A SUGGESTION THAT MIGHT FIX THE PROBLEM I WONDER IF THE HEATER CORE IS STOPPED UP WITH THAT SEALER ? I TOOK THE THERMOSTAT OUT AND THERE WAS SOME OF THE FIBER STUCK IN THE THERMOSTAT. I TOOK THE THERMOSTAT OUT AND PUT A NEW ONE IN. IT RAN GOOD AND HEATED FOR ABOUT ONE WEEK. WE HAD REAL COLD WEATHER. AND NOW IT IS NOT HEATING. THE TEMP GAUGE CAN GET TO NORMAL BUT THE HEATER BLOWS COLD AIR. ANY HELP IS APPRECIATED.

- , Hagan, GA, USA

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