Question about 1990 Ford Tempo

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Why does my 90 ford tempo only overheat when air temp is above 75 F and Im going uphill?

I live at the top of a hill the temperature gauge almost hits the red after turning off the engine I get about five minutes of boiling summer only winter runs fine

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  • Ralph Sabean
    Ralph Sabean Dec 16, 2014

    The Thermostat is probably not working properly. It could have and leak in a head casket. Does it lose a lot of water? I think it should be the Thermostat though. Just have it replaced and see if it solves thew problem. If you know how you could replace it your self. It will be on the engine input from the Radiator,

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  • Contributor
  • 11 Answers

Perhaps a bad Thermostat

Posted on May 15, 2014

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SOURCE: 1989 Ford F250 Diesel is spiking to red in temp gauge

When a temp gauge spikes it usually is not a real heating problem, but possibly a sending unit, or wiring to sender problem. Most especially with the diesel and its vibration. Difficult to say from way over here, but I would rather believe that there may be a bare spot on the wire which occasionaly touches ground.

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Posted on Jan 14, 2010

subikid90
  • 180 Answers

SOURCE: electric cooling fan on ford five hundred not

Check the fuse for the fan and you could test to see if you have a voltage running to the fan when the car starts to overheat. If you have no power to the fan then trace the wore and see if you cant find the problem. If you have power then the fan motor is most likely bad.

Posted on Mar 03, 2010

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SOURCE: 2000 Ford Taurus Antifreeze boiling over

hi, the problem you are having is down to one of a couple of problems, now as you state the air blows cold then this points towards the thermostat not opening so this then dont pump the coolant round the engine resulting in the top half of the being hot and the bottom half cold so this is why you only get cold air.

so the first thing you should do is get the thermostat changed.

you also need to bare in mind that the problem could be a damaged water pump this does happen from time to time so check for any signs of water leak where the water pump is by the timing belt, if their is no signs of leak then the thermostat is the likely cause.

you also need to think that as the engine has over heated this could have caused the head gasket to fail so this will need looking at to if after changing the thermostat you have the same over heating problem.

so replace the thermostat as this has clearly gone and then when you re-fill the coolant make sure any bleed screws are undone if you have any on your coolant system usually located in one of the top hoses running around the engine, (not all coolant systems have one as many are self bleeding so dont worry if you dont see any bleed screws) now when you start filling the coolant up make sure you only trickle the coolant in to prevent any air lock building up in the system.

if you are unsure what you are doing then please leave this to someone who has some idea of the kind of work involved in this type of repair

Posted on Jul 19, 2010

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