all depends on how long the car has been running. It's cold and it WILL take a little while for that block to warm up!! of course you have to have sufficient coolant in the system for the water pump to circulate around. Second, if your heater core is plugged and has not been flushed it will not work for you. Gotta stay atop of general maint issues. And that is a Ford product, shouldn't be too expensive. Jeep is the worse
1994 Mercury Grand Marquis LS Sedan RWD
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Maintenance & Repair
I changed my wiper motor my wiper switch and the windshield wipers still will not come on. I have a 99 grand marquis
1999 Mercury Grand Marquis 4 Dr GS Sedan
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Maintenance & Repair
heater want get hot
2004 Mercury Grand Marquis GS
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Maintenance & Repair
I have a 2002 grand Marquis the car will run for a while and then it will cut off and then I need a jump
2002 Mercury Grand Marquis
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Maintenance & Repair
I have a 2001 mercury grand marquis and I replaced the IAC valve now it turns over but won't start. What should I do now? I'm stumped.
2001 Mercury Grand Marquis LS
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Maintenance & Repair
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