Questions & Answers for: Toyota thermal relay

C is on, it is supposed to run all the time. If the A/C is off and it is still running all the time, then check the thermal relay. It is probably stuck in the closed position. The fix is to replace it

thermal relay is at on my 97 four runner. The fan runs all the time with the a/c off and its not the clutch as i can spin it by hand when shut off. Someone said the thermal relay could be shot. I have

Radiator and air conditioning fans stay on continuously while engine is running. Relays and Thermal switch is functioning normally. replace temp sensor

...thermal switch that sends it relay the signal to the fan you can disconnect and the fan has to start working if this works the problem is you have the thermal switch. Thanks check or replace the ...

...relay problem but I doubt it since both fans come on with the AC. I would check the thermal switch. When the engine gets warm enough the switch should turn on and turn on the fan. Your best bet is to ...

...OK there is a thermal fan switch and relay that operate the fan ...first thing is to disconnect the fan plug and power the fan and see it works..then check the thermal switch is working and the ...

...relay, the coolant temperature sensor could be it, or check if there is a fan temperature switch (maybe called a thermal switch) in the radiator that is tied into the fan circuit. Sorry, I don't have ...

...thermal switch or temp sensor puts the engine computer in limp mode and the computer will activate the fan relay to prevent overheating. The temp sensor could be faulty, or something is not telling ...

.. and another (with you A/C fan) relay... on the right side of your engine compartment... that feeds through a thermal switch ... Both appear to be SPDT (Single Pole DOUBLE Throw... on the schematic)

...thermal switch, sticking relay, faulty wiring... If the cooling fan is switched on by the engine management ECU it could be a software glitch or a faulty ECU. I suggest you have a look at a wiring ...