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you probably need head gaskets. recheck the coolant in the radiator when the engine is cold. if its low even though you just filled it when you replaced the thermostat, and you dont see any external leaks, i would strongly suspect head gaskets. its common on these. and sometimes no heat is the only symptom the driver notices!

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โˆ™ 2005-12-07 01:38:51
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Q: If you replaced the thermostat on a 1992 Toyota SR5 V6 4wd pickup because after the truck warmed up you were getting cold air but now it works sporadically do you need a water pump?
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