Hi,

I would liek to test out my blower motor, to see if it is the culpriot that is blowing my fuses. It blows fine when it doesnt pop fuses, but its something to look at, as the fuse heats up really hot when I up the blower speed.

I have read from various posts about hotwiring the blower motor to the battery. I can do that.

However, I dont know much about testing electronics, and besides seeing if it works (I guess it would blow high speed?) is there any other info I can get from doing this?

Also, can anyone tell me about the resistor pack for the blower motor? Its a square bon of spring looking curls apparently? I have it on the front pasengers side wheelwell. It looks fine, but it definitely heats up. If one of those resistors failed, could that cause the #8 fuse to blow or make the blower pull too much power?

Thanks

JMH

__________________
Current Diesels:
1981 240D (73K)
1982 300CD (169k)
1985 190D (169k)
1991 350SD (116k)
1991 350SD (206k)
1991 300D (228k)
1996 Dodge Ram CTD (442k)
1996 Dodge Ram CTD (267k)

Past Diesels:
1983 300D (228K), 1985 300D (233K), 1993 300D 2.5T (338k), 1993 300SD (291k)

Simply connect an ammeter in series with one of the wires that leads to the motor. If the current draw is very near the rating of the fuse, then the motor is likely what's blowing the fuse.

I just replaced the blower motor in my 300E. It would not turn at all and was dragging the voltage down severely, but it has a heavy bar fuse so it never blew. Once it starts siezing the current goes way up. As long as it turns freely, it is probably not the cause of the fuse blowing. Simply give it a spin, if it spins free, look for the problem elsewhere, if it has lots of resistance, it is your problem.

Good luck,