There is almost never a situation where you would need to take the radiator cap off of the radiator to add coolant.
Grand marquis radiator fan not working.
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41 of the time it s.
Diagnosis a word of caution.
One night i started my 99 mercury grand marquis and the idle was very high and wouldn t kick down.
Mercury grand marquis heater is not working repair symptoms blower motor replacement when the blower motor fails the air conditioner and heater may still work and heat or cool may be felt at the vents but the air pressure will be dramatically decreased.
While there are a variety of reasons your mercury grand marquis is overheating the most common 3 are a coolant leak water pump radiator hose etc the radiator fan or a failed thermostat.
2003 grand marquis cooling fan will not turn on.
If the radiator fan is not working it s a serious problem.
I drove home a few blocks and forgot until the next day when it didn t the same thing.
If there is no coolant in your overflow you can refill it by adding more to the overflow reservoir.
Just because the radiator fan is not on does not mean that it is not working.
Disconnect the plug at the fan supply the wires that go to the fan with 12 volts direct if the fan starts the fan is good if not replace it now if its good follow the system back go to the fan replay check it sometimes you will have 2 or 3 of the same relays in the under hood fuse box just switch them out so that the fan has a good one known to work if this fixes the.
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Ive replaced 2 cooling fan motors with shroud and relay engine coolant temp sensor ive checked and replaced the fuses raidiator and thermostat.
Your mercury grand marquis s radiator fan has one of the most important jobs on the vehicle it is the last line of defense between you and an overheating engine.
99 mercury grand marquis ls cooling fan isn t working 3 answers.