Why does my radiator fan not work at high speed?
Check the electric radiator fan, if vehicle heats up at low speed then it sounds like the fan is not working! at high speed the air going through the radiator cools the engine. Check the fan out! God-Bless! Hope this helps you. or check to see if you have a bad fuse for the fan or relay is bad and will not turn on fan.
When do you turn on the radiator fan?
This fan should only run when the a/c is on or when the engine temperature has reached about 218 degrees. Once the a/c is off or the engine temp drops to about 210 degrees it shuts back off again. It rarely comes on at speeds over about 35 mph because at that speed enough air is forced through the radiator to keep the engine at about 198 degrees.
What are the symptoms of a bad cooling fan?
Common signs include the engine overheating, cooling fan only working at certain speeds, and the fan never turning off.
Why are my cooling fans running at all times?
3. Cooling fans stay on at all times. If the cooling fans are staying on at all times, this is another (less common) symptom of a possible problem with the cooling fan relay. If the relay shorts internally, it may cause power to be permanently switched on, which will cause the fans to run at all times.
When does the radiator turn on when the AC is on?
When the AC is switched on, the compressor clicks on. HOWEVER, the radiator fan does not turn on with the compressor. The rad fan only comes on when the engine gets hot, and it works well to keep the engine temps down. HOWEVER, it is only one speed (a low speed).
Why does the radiator fan come on when the car is not running?
On some modern vehicles, an ambient air temperature sensor, vehicle speed sensor, and other sensors may provide input to the car computer to determine radiator fan operation. Consult your vehicle repair manual to check the required sensors and switches. On a warm engine, the fan may come on even if the engine is not running.
Why is my air conditioner fan running at high speed?
This problem is often caused by a faulty pressure sensor located on the air-conditioning condenser. If accessing fault codes, there are no relevant DTCs stored in the engine control module (ECM) or signal acquisition module (SAM). • Run a Quick Test to check for any relevant fault codes.
When does the Rad fan come on or off?
The rad fan only comes on when the engine gets hot, and it works well to keep the engine temps down. HOWEVER, it is only one speed (a low speed). When I disconnected the coolant temp sensor and started the engine, the fan came on immediately, and at high speed. It came on even though I didn’t have the AC on.