Why is my evaporator fan making noise?
If the evaporator fan motor loses lubrication or the bushings get worn it may become noisy. The fan motor is located behind the air grille or evaporator cover and can normally be replaced by simply unplugging the wire harness connector and removing the mounting screws.
Why does my condenser fan stop running after turning off the AC?
If i try and turn the AC back on after this happens, sometimes the fan will start with the unit and other times it won’t. If I wait until way later (hours), the fan will start with the unit and run another 20-25m before turning off (while the unit is still running).
Do you need to replace the condenser fan in a car?
Many cars use the same fan for both the radiator and the condenser though. Anytime the air conditioning is on, your condenser fan should be running. If you start the engine, you should see this fan spinning with the AC system. If it’s not, you need to replace it.
Is the radiator and condenser fan the same relay?
Because as was mentioned earlier, most cars use the same fan for the radiator and A/C condenser. There are, however, some models that use a dedicated second unit to the condenser. In such a scenario, the condenser fan and radiator fan may or may not share the same relay.
When do you Know Your AC fan motor is bad?
If the compressor is working but the fan blades are not spinning, the motor is faulty. That’s your cue to turn the system off and call the pros to repair the AC fan motor. Replacing an HVAC motor is a job that can be done quickly once the problem is identified.
What to do if your condenser unit fan stops running?
If the condenser unit fan won’t start at all, check for power to the unit and to the fan motor and that all of the controls are calling for cooling (or heat pump operation); check for loose, disconnected wires; Check for a frozen fan motor (motor won’t turn manually when power is off).
What are the symptoms of a bad cooling fan relay?
1. Engine running hot One of the first symptoms commonly associated with a bad or failing cooling fan relay is an engine that runs hot or overheats. If you notice that your engine is running at higher temperatures than normal, that may be a sign that the relay is not functioning properly.
If the compressor is working but the fan blades are not spinning, the motor is faulty. That’s your cue to turn the system off and call the pros to repair the AC fan motor. Replacing an HVAC motor is a job that can be done quickly once the problem is identified.
Why is my Mercedes radiator fan running on high speed?
Please try again later. This is a very common problem with the Mercedes radiator cooling fan running constantly on high speed. The problem in most cases is a bad ecm so in order to fix it the ecm will have to be replaced and programmed to work with your vehicle. Check the mass airflow sensor first.