Dodge Diesel Fan Clutch Problems

Replace it with an oem clutch fan from mopar.

Dodge diesel fan clutch problems.

The fan clutch is responsible for controlling the operation of the cooling fans. Test the air conditioning to make sure the fan clutch will engage. If your dodge cummins radiator fan can stop while the engine is running it s likely the fan clutch has failed. Fan spins after engine shut down might indicate a weak clutch.

If you are not hearing it speed up when the ac compressor kicks on it is a pretty good bet the clutch is bad. Dodge diesels are fitted with an electronic viscous fan clutch which is electrically activated by the ecu when the engine temperature reaches high temperature or the air conditioning head pressure reaches 240 to 270 lbs. The first time that the compressor was replaced the system was flushed including chemicals. The second time too but installing brand new condenser and filter.

Check the electrical cables that run from the motor to the fan clutch. Another common problem with the new cummins motor is that the electrical cable can be cut while the fan is engaged. Usually a bad or failing fan clutch will produce a few symptoms that can alert the driver of a potential issue. A bad fan clutch may not engage properly or at all and as a result will disable the fans or prevent them from working at maximum efficiency.

If the cables are cut splice them back together and secure them away from the fan. The air conditioning head pressure is reported to the ecu by a transducer located in the discharge line and will cause the fan clutch to engage almost every time the truck idles for a few minutes in warm weather. Lock up on the fan clutch is controlled by the computer. Silicone fluid leaking from the fan clutch would cause this problem.

In case the pressure plate is not releasing evenly one side of it can drag and fail to release. Fan and fan clutch. Replacing your fan clutch can improve your a c system and keep the engine cooler. The two most common causes for this problem especially after a dodge clutch replacement is insufficient travel on the throw out bearing or a defective pressure plate.

This video demonstrates the typical characteristics of a bad fan clutch.