Question about 1995 Ford Windstar

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1995 ford windstar overheat after replacing the thermostat

I have a 1995 ford windstar that this morning when i started it,i let it warm up and got back in and it was blowing ice cold air and it was getting hotter and was about to overheat so i replaced the thermostat but i started it back up and drove it,and it still was blowing cold air and getting hot,so i took it back home and let it cool off,i started it back up and let it idle it was still blowing cold air and it was getting hotter so it got to about the top line right under the H and i rev up the motor to about 3 rpm and all of a sudden the temp needle gos all the way back to normal and i took off driving and the heat was hot and the vans temp was normal until i stop at a red lite and was idle it started to blow cold air again and the temp gauge was going up again to the H so i rev it up again and the temp gauge gos back to normal and starts blowing out hot air all the way home and i let it idle and it did the same thing again?,i have no water leaks no where and i dont here anything weird under the hood i checked my fluid and filled it wasnt really low at all...??? my fans are working properly???

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  • wifeofjoe1 Dec 26, 2008

    We are having the EXACT same problem. It started last winter, and boy was it a cold ride whenever we went somewhere. If you didn't drive really fast, (around 3 rpm) it only blew cold air. We actually drove it like that for the last few months of winter. We replaced the water pump and it fixed it for a few months. Now we are having the exact same problem again. We just replaced the thermastat, but that didn't fix it. My husband is going to try the water pump, AGAIN. He hasn't look at it yet, but the last time, all of the little fins on the water pump was completely wore off. I can' t understand how it could possibly be the water pump again since we replaced it in July and this in only December, but my husband says that is the only thing it CAN be. So if we find another answer, I will let you know.

  • kilmacolm Dec 30, 2008

    I, too, have recently developed the same EXACT problem!! I am going to try installing a new thermostat, since it is a lot easier and cheaper than a water pump.I don't have a lot of faith in this activity after reading the previus posts. I feel there is something else going on. What it is, I do not know yet. Will get back to you about the thermostat change. Is there a Ford Windstar electrical genius out there? Could it be a relay malfunction?

  • wifeofjoe1 Jan 03, 2009

    My husband just took the water pump off AGAIN to just check it this time to make sure that it hadn't gone bad since when he replaced it back in July. It is fine. My brother told him to flush the radiator AND the heater core and see if that helps any. So that is next on his list. My brother says that with the 3.8 engines like ours, it really sounds like a blowed head gasket. We found out that if it IS a blown head gasket, which we are PRAYING that it's not, it'll be around $90.00 for my husband to fix it himself. It's just not the most fun thing in the world to do when you don't have a garage.

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I had the same problem and it was the water pump, loosen the belt and check the pump for excessive play.

Posted on Jan 03, 2009

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knotbeerdan
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SOURCE: 1995 ford windstar overheat after replacing the thermostat

Let your engine warm up with the rad. cap off and see if the coolant level drops. and make sure your overflow is full. It blows cold air because there is no water getting to the heater core. And it shows a normal(ish) temp because the water needs to be touching the temp. sensor. I really do think there is air in the system and there is not enough coolant but hard to tell from here. Also as with overheating any time make sure to check your oil and look for any coolant as the head gasket seldomly holds together if the motor overheats.

Posted on Dec 22, 2008

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