(1)Just wondering if my car has a coolant temp sensor
(2) because the fans only work when AC is pressed do not come on when engine reachs temp
(3) i was wondering if it does have a coolant temp sensor if so maybe it's shit itself and isn't telling the fans to turn on or are they run by the ecu???
(4)And could there be a couple of problems because it still over heats with the air con on which makes the fans run but it takes twice as long as it does without the air con and fans going???
Yowie wrote:(1)Just wondering if my car has a coolant temp sensor
(2) because the fans only work when AC is pressed do not come on when engine reachs temp
(3) i was wondering if it does have a coolant temp sensor if so maybe it's shit itself and isn't telling the fans to turn on or are they run by the ecu???
(4)And could there be a couple of problems because it still over heats with the air con on which makes the fans run but it takes twice as long as it does without the air con and fans going???
(1) Almost certainly. On some EJs it's screwed into the coolant crossover moulding in the top/middle of the engine. If you're actually losing coolant, hypothetically the water level could drop below the sensor position and cause odd sensor results.
(2) Fans coming on with AC is normal. An ECU-controlled set of parameters decide when it comes on in non-AC conditions. I understand that "coolant getting hotter than x degrees" is one of those parameters.
(3) See (2).
(4) AC is of course going to put more strain on your cooling system (partially offset by fans activation)
A cheap approach to explore the issue further would be to download the torque app to your phone, obtain an ebay bluetooth OBD2 sender then check the coolant temp readout with that. If it's normal looking data (eg between 85 and 95 degrees coolant temp in most driving conditions once warm) you could downgrade your concern about the sensor itself being faulty.
I'm sure others can suggest other/better diagnostic approaches.
yeah sweet I will get a new one see what happens I rang Subaru yesterday they just said get onto Fair trading about the mechanic because noone else will touch it as they can become liable what a f**K aroundYowie wrote:The thing in the red circle (behind the crossed-out hose) looks like it, but as you say, it's not the greatest photo so a bit hard to be sure. If it's plugged into a load of coolant (as you say) then the odds are pretty good.
06liberty wrote:Just wondering if my car has a coolant temp sensor because the fans only work when AC is pressed do not come on when engine reachs temp i was wondering if it does have a coolant temp sensor if so maybe it's shit itself and isn't telling the fans to turn on or are they run by the ecu??? And could there be a couple of problems because it still over heats with the air con on which makes the fans run but it takes twice as long as it does without the air con and fans going???
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