Question about 1990 Subaru Legacy

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Engine overheating\ cools down when rpms get to 4000

Replaced thermal stat, still overheat, took it out, got second opion, installed another new one, ran good for about an hour, overheating again, but, this time i figured out that the higher the rpms got the lower the temp needle would go down. o.k. so canadian tire the first place said it's probably the head gasket and said if i want to run the car, but with no heat to take it right out and that's what they did. second guy said maybe a faulty thermal stat, doubted it was the heat gasket. he istalled the second thermal stat and i reported the high rpms thing and now he says it's obvious that the radiator is plugged. i have a parts car, so i can get that rad out or should i get the one thats in there now flushed. does anyone agree with the second mechanic? the car engine sound good and runs good with lots of power.

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  • yadayada
    yadayada May 11, 2010

    head gasket, have a test run to see if combustion gases have entered the radiator, only the dealer will have this equip.

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I would get a radiator flush and fill to make sure the radiator is clear and clean. it could be a head gasket if you were losing lots of water but i dont think thats the case.get it flushed out and go from there

Posted on Jan 08, 2009

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