07 Ram 2500 with a cummins
Replaced the fan motor about 18 months ago as it was intermittently going in and out and then only working on high and it fixed the problem. Started the same thing again, this time I checked the resistor and it was shot, replaced and it worked fine for about 5 minutes before the resistor went out. With the key on and engine not running the fan controller works for all 4 speeds, with truck running it only works on high.
Only think I know to do it replace both the resistor and motor again and see if it fixes the problem.
Any other advice
Replaced the fan motor about 18 months ago as it was intermittently going in and out and then only working on high and it fixed the problem. Started the same thing again, this time I checked the resistor and it was shot, replaced and it worked fine for about 5 minutes before the resistor went out. With the key on and engine not running the fan controller works for all 4 speeds, with truck running it only works on high.
Only think I know to do it replace both the resistor and motor again and see if it fixes the problem.
Any other advice