Dodge Ram Wagon 3500 Problem Report

Dodge Ram Wagon 3500 Erratic Blower Motor Operation Due to Overheated Switch

(4 reports)

The blower motor may operate erratically and the blower switch operation has a sticky or mushy feeling, the detents almost non existent. Our technicians tell us that the blower switch should be removed and inspected for overheating. This is common if the blower motor is frequently operated on high speed as the current flow through the switch tends to melt internal the components. Also carefully inspect all of the switch connector terminals for discoloration due to overheating and replace as required. A poor electrical contact at the connector will also cause the switch to overheat.

My switched over heated and melted. Made blower, ac , heater and all quit. Put new switch in blower now works but ac doesn't. -
Related Items:
The HVAC blower may operate on high speed only. This is commonly caused by a failed blower moto...
The fuse may blow repeatedly for the HVAC blower motor or the motor may stop working all togeth...
The AC/heater (HVAC) system may unexpectedly switch to the defrost mode when accelerating. Th...
An erratic idle, stall on hot restart and/or low speed deceleration. may be caused by a faulty...
Erratic operation of the keyless entry system may be caused by a faulty transmitter.