I've got a '95 850 turbo that has a non-working blower motor. I understand that the resistors for these sometimes go bad.

I've checked the fuses and the relays. The lights on the control unit flash, but the motor isn't blowing. I'm getting a resistor code and a couple of solenoid codes too. I verified that I have power to the blower motor and it came on when I grounded the negative terminal on the motor.

Is there a way to test the resister to verify that is defective? I hate to put a new $120 part in the car if it is something else.

Thanks.

Wren

If you are any good at soldering:

http://www.brickboard.com/AWD/volvo/1201736/850/remanufacture_blower_powerstage.html

Read all of the posts. I believe Radio Shack also carries it.

Do a search 'powerstage' for more ideas

Klaus
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Two great Volvos, a 1967 220 and a 1998 V70R

Thanks, I'll check that out.

"I verified that I have power to the blower motor and it came on when I grounded the negative terminal on the motor."

What exactly do you mean by this?


The way I take it, it appears to me your ground might have come loose. Trace the wire and see if it is loose or if the connection is corroded.

We put a jumper between the blue wire on the motor and ground and the motor came on. I think, but not certain, that the resister is in between the motor and ground.

Does anyone know of an online wiring diagram for this car?

Thanks.

you might find what you need here:

http://www.matthewsvolvosite.com/forums/viewtopic.php?f=1&t=8018
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1998 V70 AWD->FWD Turbo 200k+