Subaru Repair Questions? Ask a Mechanic for Answers ASAP
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Was the thermostat tested for any faults with it?
Let me know,thanks Pete.
O.k., if you did not have the thermostat tested with it removed this should be done.Usually, you can do this in a slowly rising in temp pot of water monitoring the temp of the water with something like a candy thermometer.You want to see the thermostat open fully between 180 and 200 at the most.If it does not open or only opens partially then the thermostat needs replaced.This is a common fault for this issue here.
The other issue I have seen is a restriction in the engine cooling system.If you have not had an engine coolant flush performed this should be done.If there is debris in the cooling system this will cause this issue here and the flush will free up and remove the debris to correct this fault.
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Is there enough air flow through the front of the vehicle/radiator or is anything blocking it?
That is very possible.If you have not had the actual engine temp tested with a temp probe when it is running hot this needs to be done.If it reads normal around 190 to 210 degrees and with the temp sensor already replaced the gauge can cause this issue here with it needing to be replaced or the instrument cluster removed and repaired by an authorized repair facility.
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