Cummins Fan Clutch Not Working

Replace it with an oem clutch fan from mopar.

Cummins fan clutch not working. Fan and fan clutch if your dodge cummins radiator fan can stop while the engine is running it s likely the fan clutch has failed. Test the air conditioning to make sure the fan clutch will engage. Switch on the a c and turn it down to the coldest setting. Another common problem with the new cummins motor is that the electrical cable can be cut while the fan is engaged.

One of the most common symptoms of a fan clutch on the outs is an inability to properly cool the air circulating through the vehicle. The thing to do is get full system air pressure then turn the key on disconnect the fan solenoid and it the fan locks on then that s a o volts on and since the fan switch and ac turn on the fan then either there s a short in the circuit or the ecm driver is stuck on. If it fails to cool down after several minutes or seems to be emitting unusually warm air there could be a problem. If the cables are cut splice them back together and secure them away from the fan.

A common cause of compressor failure and poor a c performance on the 2008 2007 dodge cummins diesel 2500 3500 is a failed electronic viscous fan clutch ev. Check the electrical cables that run from the motor to the fan clutch. Check the fan clutch wiring. If your truck has ever ate a belt they tend to catch the wiring harness and damage wiring and pull pins out of plugs.

If you know somoene with a good scantool or insite you can manually command full fan speed and easily test wiring at the plug.