Why is my radiator fan not working?
Defective temperature switch, coolant sensor or other sensor. Engine thermostat is stuck OPEN (engine never gets hot enough to turn on the fan) Faulty fan relay. A wiring problem (blown fuse, loose or corroded connector, shorts, opens, etc.)
How do you test a radiator fan relay?
How to Check a Fan Relay
- Look at the markings on top or side of the relay case and locate the two control circuit terminals, which connect to the relay’s coil, and the two power circuit terminals, which let electrical current pass to the fan.
- Connect the leads of an ohmmeter to the power terminals on the relay.
Is there a fuse for the radiator fan?
The cooling fan relay is normally located in either the underhood fuse and relay center or mounted to the electric fan assembly behind the radiator. Keep area around the fan blade clear in order to avoid injury.
Should radiator fan run all time?
An electric fan SHOULD NOT run all the time. Both radiator fans should always run when the coolant temperature sensor in the bottom tank of the radiator reaches about 212*F. It’s normal for some vehicles to have a fan run for a few minutes after the car is shut off, generally to keep the engine cool.
How can you tell if a fan relay is bad?
Bad Cooling Fan Relay Symptoms
- The engine runs hot or overheats.
- The cooling fans don’t work.
- The cooling fans keep running.
- Warning lights.
- Poor air conditioning performance.
- Swapping Relays.
- Measuring the Relay Coil’s Resistance.
- Listening for Noises.
Will a bad radiator fan cause AC not to work?
When fans aren’t properly functioning, your condenser may not receive properly cooling. Over time, this can cause your car to start emitting only hot air. The best way to check if the cooling fan is broken is through a visual inspection.
Why are the radiator fans not working on a Subaru Legacy?
I might be super late to the thread but I have a 2006 Subaru legacy 2.5 non turbo I’ve changed the thermostat the radiator the fans work to switch works all the relays work the one thing that really got me was bleeding the radiator. Once I did that and once I figured out that that was problem everything worked fine
Why is the fan not working on my Subaru?
When the fan wouldn’t work it wouldn’t blow at all, not on any speed. The lights on the fan unit worked, so it was getting power. Ah, okay. It likely isn’t the resistor pack in that case. It could be a connection to it, tho. Let me dig out a schematic for that car… edit: It also has a fan relay that could be bad.
What should I do if my Subaru Legacy overheats?
Check the fan relay,s and if not bad then check the fan motor,s. 16 people found this helpful. If it overheats at highway speeds, it’s not the fan (s). There is enough air-flow at..say..45 mph+ to make fans redundant. Next is thermostat. remove radiator cap cold, start and allow to warm up and see if coolant begins to flow
How much does it cost to replace a fan in a Subaru?
He went to get the exact price and came back to say the tech note says when replacing the resistor that the blower motor must also be replaced, as the new resistor can ruin the old motor. The new total would be about $800.