D2 Heater/AC Blower Motor/Fan

[SGaynor]

The blower motor stopped working on my D2.

The 40A fuse in the engine compartment was blown. Replaced that - no joy.
The fuse in the cabin was fine.
Swapped the relays - no joy.
Replaced the blower motor assembly with a new one - still no joy.

Measuring the voltage at the motor plug gives me 10.5V at all fan settings except for max; at max fan speed V = 12.3.

So, I'm stumped. Would it be the resistor?

Any suggestions?

 

[JUKE179r]

You can pull the resistor pack and check it since it's to the left of the blower.
I've seen these burned up due to leaves and a dead mouse (!) stuck in the cooling fins.

 

[SGaynor]

You can pull the resistor pack and check it since it's to the left of the blower.
I've seen these burned up due to leaves and a dead mouse (!) stuck in the cooling fins.

Yeah, it had some leaves in it and a big ass bug in the fins.

 

[jprover2]

You need to find out why the 40 amp under hood went out. Check voltage at cabin fuse box fuse 31 and 7. The fuse may look alright but if the voltage is dropping before the cabin fuse box the blower motor wont run. I had similar issue 2 yrs ago. On my engine fuse box connector CO572-3 had melted and was causing a drop in voltage at fuse 7 on interior block.

 

[JohnB]

Mine was the inside fuse box but I did not have any blown fuses inside or out just a bad circuit.

 

[mbrummal]

My inside fusebox had a problem too. No blown fuses. I measured voltage at the motor connector but it dropped to nearly nothing when the motor was connected. I checked the voltages at the engine bay fusebox connector and at the power in terminal of the interior fusebox and they were both good. It dropped on the out from the interior fusebox. I opened the fusebox up and followed the traces on the circuit boards and soldered a 12 awg wire in there where the traces were damaged.