My Subaru has overheated twice in 6 months.
I have flushed the coolant twice, after each overheat instance.
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2005 Subaru Legacy
Question: Sporadic overheating
Answer #1Tyreguy May 18, 2011, 09:36Master
Several things can cause an engine to overheat. Flushing the cooling system is a good maintenance practice, but won't cure and overheat condition. A faulty/sticking thermostat, a clogged radiator, a faulty radiator fan or engine temperature sensor can cause problems, or even a loose/worn/misadjusted serpentine belt can cause the problem. Because its only happened twice, a shop will have to 'catch it in the act' to help determine whats causing the overheat condition.