What causes my 98 grand marquis to run hot?

Asked by Feb 10, 2017 at 09:15 AM about the 1998 Mercury Grand Marquis 4 Dr LS Sedan

Question type: Maintenance & Repair

My car has gotten a new radiator hose and fuel
pump when its sitting to long at the idling stage the
temperature rises. Were changing the water pump
today and then the radiator tomorrow. What can it
be thats really causing the over heating?

2 Answers


Yes it could be part of it. Also change the thermostat out. Remember to purge the cooling system from air pockets when refilling.


more than likely a thermostat or low on coolant.

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