Question about 1991 Ford Explorer

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91 Ford Explorer Radiator temp flucuates

Radiator temp on guage goes up about 3/4 of the way and then rapidly goes down to just above cold where it has normally been since I bought the vehicle. It does not get to the red portion of the guage. It climbs slowly to a certain point and then when it gets there, it goes to the lower point quite rapidly but not instantly. I have checked coolant level, changed thermostat and top and bottom radiator hoses. Also, have changed sending unit. Originally had 198 degree thermostat and I even changed that to a 180 degree which was a mistake because I don't have a lot of heat inside the car now. I don't suspect the wiring because the guages are solid and the sending unit connector is solid. My next move is a new fan clutch and fan. My fan hub is cracked and needs to be changed anyways. Any suggestions would be appreciated. Thank You in advance

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  • Gordon Hubbard Jan 27, 2009

    What do you mean by air con broken. How would that affect heat?


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Air con is broken

Posted on Jan 27, 2009

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