At oil temp light and traction light

Asked by Sueguru44 Oct 26, 2019 at 06:17 AM about the 2010 Subaru Legacy 2.5i Premium

Question type: Maintenance & Repair

Got an oil change and my at oil temp light came
on.... was told replace the thermostat replaced the
thermostat and the car overheated.... put old
thermostat in no overheating but the AT OIL TEMP
LIGHT RETURNED AFTER 30 mins of
driving...Subaru’s did a $1000 job changin
thermostat radiator and radiator cap.... LIGHT
STILL COMES ON AFTER DRIVING!!!! No solution
money wasted only had car since March/April.... I
need help included picture of thermostat removed
from then put back into my car after overheating
with new thermostat

1 Answer

1,920

Looks like you bought a 2010 SOHC motor with a blown head gasket that someone tried to remedy by tearing out the guts of the t-stat! That NEVER works for long, as at speed the blown headgasket overwhelms the cooling capacity of the radiator. You were defrauded. Sorry. The AT light comes on perhaps the coolant temp doesn't square with what the ECM and TCM require. There's a small chance that the new t-stat you put in is undersized, and not the larger orifice OE size. So first get a Subaru-spec (can be aftermarket, as they've caught up) t-stat installed, and see if the AT light goes off. You may have to disconnect the battery for awhile to erase the memory of the event. Good luck, You'll need it as someone already brutalized the old t-stat to try to hide the overheating. Sheesh!

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