Question about 1995 Ford Windstar

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Cooling fans wont run at all temp gauge says i am overheating but reality is running around 202 found this out from a garage test that was done i suspect main computer malfunction ?

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Before computer Get your self a copy of the workshop manual,they are available at library,follow its instructions to unplug fan and test with 12 volt power source. Then try the thermostatic switch, you do this by removing the switch from the vehicle and placing it in boiling water in a metal dish siting on the vehicle to maintain earth. If the fan comes on thats good and look at the gage and compare with thermometer. My guess is the thermostatic switch is faulty, you mite even just chuck in a new one to be on the safe side. I like to change things like this and raiator cap, thermostat, radiator and heater hoses especially on an older vehicles, don't forget air cleaner element, fuel and oil filters and oil changed about every 6000 miles all helps your vehicle run at its correct poerating temperature and efficiency,
Cheers, Timo.

Posted on Apr 29, 2010

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The fans are controller by the computer. The curcuit starts like this.... Engine has a switch screwed into the intake or water gooseneck. That wire goes to the computer. From the computer another wire is fed to the cooling fan relay which will tour power on to the fans. If the switch is at fault I would replace that as well as for the relay. Most wear out about the same amount of time. I doubt if the computer is at fault

Posted on Apr 29, 2010

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What engine do you have 3.8 or 4.6 liter?

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