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How do you change a thermostat on a 1998 Subaru Legacy Outback?
Wiki User
∙ 16y ago
Locate the lower hose pipe from the radiator to the engine block. The thermostat is within the housing that that the lower pipe is attached to at the engine block. The housing can be removed ( with the hose pipe still attached) by removing the two 10mm bolts. The thermostat is then exposed and can be removed by lifting it out. The only thing holding in place is the rubber sealing ring, which you should be careful not to damage on removal. Subaru thermostats are rated to open at 76 degrees centigrade, but usually don't open till 90 degrees are reached. If you have a 90 degree opening thermostat, then you can overcome the overheating problem by drilling 3 or more holes in the face of the thermostat, being careful not to drill into the 'spring'. Frank Sheehan, Dublin, Ireland
Wiki User
∙ 16y ago
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