If you are experiencing problems with your car AC, such as poor air conditioning response, overheating, or unusual noises, chances are there is something wrong with the radiator fan. To diagnose and fix the issue, refer to the repair manual for your specific YMME (year, make, model, engine). If you are not able to find a solution, take your car to a repair facility where a professional specializing in auto air conditioning repair services can have a look at it. Here are 4 common radiator fan problems:

Faulty Temperature Sensor: When the temperature sensor becomes faulty, it doesn’t activate the fan. To test the switch functionality, unplug the sensor and put a jumper wire across the connector. If the fan turns on, it means the sensor is faulty.

Low Coolant Level or Leaks: When the temperature sensor isn’t submerged in coolant, it doesn’t detect coolant temperature. Check the coolant level, and if the system is running low on coolant, look for signs of leaks.

Resistor Problems: Some vehicles make use of a fan resistor pack to manage fan speeds and activation levels. The resistor can be easily checked by disconnecting it and testing it with a multimeter. Check the resistance. If it’s over-limit, it has failed the test. This is a general rule of thumb in any open circuit.

Blown Motor or no connection: The same goes for the motor. A blown fuse is a good sign of short-circuit in the motor. If there is scraping, wobbling, or grinding, it might mean the fan motor and blades are no longer connected.

If you are not able to fix the issue or even diagnose the problem, it’s better to talk to an expert specializing in automotive radiator repair and parts replacement. It allows you to shorten diagnostic time and effort by pointing you in the right direction.

Facing problems with your car AC? Bring it to E2Automotive’s auto repair facility and let our experienced, ASE-certified technicians provide an appropriate solution to your problem.