Question about Cars & Trucks
Usually, if you shut the heater off, then the temperature will climb. The interior heater will actually assist in cooling the engine's coolant.
Subaru head gaskets rarely ever fail by the way.
First, pressure test the cooling system and make sure you have no leaks.Also check the radiator cap for condition and fitment.Then check and/or replace the engine thermostat.
Subarus are generally speaking, extremely reliable vehicles and don't often show these types of issues.
Posted on Nov 03, 2012
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Posted on Jan 02, 2017
Was the water pump brand new or rebuilt? I have seen rebuilts fail on the first test drive.
Before pulling the head, I would take it to a shop and request a CO2 test to check for combustion gasses in the cooling system. Shouldn't cost more than $30 and is a pretty definative test.
Posted on May 18, 2009
yes sounds like a stuck thermostat or the temperature plug if faulty could also you need the radiator fluid tested fro proper mixture
but sounds like thermostat stuck and most likely going bad
Posted on Jan 06, 2010
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