I don’t know when it crapped out, but two weeks ago when I took Zeb out for a joy ride I pulled out the heater blower knob for a nice hot blast of … WTF! The heater was doing its job, and as long as I was chugging along at 35 – 40 the air coming out the bottom of it was toasty, but that blower was giving me the silent treatment. UNACCEPTABLE!
Now, diagnosing electrical problems (as we all know) is a trial, but I wanted my damned heat, so I hooked my trusty multimeter up to the fuse panel and checked for continuity all the way to the harness connector at the blower end of the circuit. HAH – just as I suspected –
I removed the blower cap and found no damage to the armature, brushes or soldered connectors, cleaned the dust out and reassembled. It must be the resistor. A quick Mud search confirmed other Mudders have had this very problem, so I went ahead and ordered a replacement from Mouser. While waiting for it I removed the original.
I knew from the search threads that the replacement resistor was longer than the original, and that the mounting bracket would have to be replaced, so when the resistor arrived the manufacturing process began.
Now, diagnosing electrical problems (as we all know) is a trial, but I wanted my damned heat, so I hooked my trusty multimeter up to the fuse panel and checked for continuity all the way to the harness connector at the blower end of the circuit. HAH – just as I suspected –
I removed the blower cap and found no damage to the armature, brushes or soldered connectors, cleaned the dust out and reassembled. It must be the resistor. A quick Mud search confirmed other Mudders have had this very problem, so I went ahead and ordered a replacement from Mouser. While waiting for it I removed the original.
I knew from the search threads that the replacement resistor was longer than the original, and that the mounting bracket would have to be replaced, so when the resistor arrived the manufacturing process began.