2004 SUBARU LEGACY OVERHEATING

Asked by Feb 28, 2017 at 08:10 AM about the 2004 Subaru Legacy L

Question type: Maintenance & Repair

REPLACED HEAD GASKETS 2013, IST OVERHEATING IN JAN 2014, 2ND OVERHEATING DEC 2016 AND 3RD OVERHEATING 2/17. REPLACED THERMOSTATS X2 AND NEW RADIATOR 12/16. MECHANIC CAN'T DUPLICATE THE OVERHEATING WITH DRIVING AND LETTING CAR IDLE

2 Answers

91,545

Intermittent problems are difficult to solve. What sort of driving conditions cause the over heating? Did your mechanic check the cooling fans?

6,530

I've run into a couple of similar post-hg-replacement scenarios. First involved a simple clogged radiator; the second clogged rear heater hoses. Flush both and clean rad to see if better. Also, a non-OEM (smaller) t-stat will cause overheating as its bore is too small. So check that t-stat is OE.

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