I installed a new blower motor resistor pack on my 97 Dodge B2500 Van. The pack and connecting harness had burnt from a faulty connection. I chose to use one from a 98 1500 Pickup as that I could not find a wiring harness for my van's resistor pack (No salvage yard had a 97 or latter van). The old resistor pack was the open coil type, the new pack it the solid ceramic type. I installed the pack and harness on Saturday. I located the pack (when standing in front of the van) on the left side of the cover over the evaporator. core. Yesterday and today the blower motor quit running when I was adjusting the fan speed. The AC compressor was still running. Shut the control off and back on a few times and the fan works, it seemed to take about 30 seconds to one minute to restart. It will work at any speed. It only quits when I change fan speed and at random at that.
you may need to replace the actual switch that turns it on ,i have seen a lot of those go bad and that's how they,ll do if it had anything to do with the resistor again it wouldn't work at all or it would have burnt the new resistor out on it,so you know that part of it is still working, id lean towards the switch ,it could have been part of the problem all along ,id try another switch on it,see if that doesn't repair it,you could also have motor going out on that one that will cause them to burn up resistors a lot,good luck.
