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2001 Dakota heater blower/resistor problem

2568 Views 16 Replies 9 Participants Last post by  jpbarton
I don't know how many people on here still own older Dakotas, but if you do, you're probably well aware of the problem with burned up blower resistors. I've put 3 resistors, 2 pigtails and 2 blower motors in my truck and as of last week, my blower completely stopped working. I read a lot about this, and I've found 3 possible causes: bad ground straps, bad ignition switch, and poor quality replacement blowers. I'm also wondering if a small heater core leak can cause it? My last resistor lasted about 6 months, and I only used it on high for short periods and never used the AC. The consensus is it's caused by high amp draw by the blower. Does anyone have a diagnosis/repair pathway to help me get to the bottom of this problem? It would be great to have a comprehensive answer that covers all 4 possible causes.
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You may want to change the blower motor if you are going through resistor assemblies. If the blower motor bearings are worn out, they may be causing more friction that requires more amperage, and then the resistor pack overheats.
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