In the HVAC compartment attached to the firewall on the right side of the vehicle.
Answer 1. blown fuse 2. broken wire 3. broken heat sensor (on side of heater housing, inside car) 4. burnt wires 4. bad blower motor speed resistor 5. bad blower motor 6. bad blower motor switch
where is the blower motor resister located on an 2004 s40
on ebay £40
What year and model
Up under dash, passenger side. My mechanic described it as "take a blower, build a Volvo around it". I paid abt $800 several years ago at a non-dealer Volvo shop. Process starts with taking inside of glove box out - you can see it from there...
Its located next to the blower motor housing and its called a power unit.....
Volvo heater relay93 Volvo 850 heater motor relay is on the heater box towards center of car. That is without the digital climate control. There are two relays side by side, my relay has bad points and a blue cover. The resistor pack could also be your problem, it is on/in the heater box also. The heater box is below the glove box in front of passengers knees. The Dealership refers to the resistor as a power unit (for auto climate control) systems. When this fails, the blower motor will not work. No heat or A/C. A different resistor is required for manual climate systems. To access this unit, you will need to remove the the glove box , the support bracket for S.R.S (passenger side) , and possibly the wire harness. There should be left of the blower motor, the resistor. New up to $300. salvage yard $6-25. Try Crazy rays
1 engine cooling fan and 1 heater/ac blower fan
There is a resistor pack under the dash next to the blower motor. I had the same problem and eventually the blower stopped all together. I was in no hurry to spend the $100+/- so I tried a lot of trouble shooting, but after talking with 2 Volvo Technicians they both told me that it was the resistor pack without looking at the car. Try looking on eeuroparts.com, $65 or $136 depending on whether or not you have electronic climate control.
Check and change the relay
Yes, they do, if you're referring to tractors in the context as they're applied to tractor-trailer truck combinations. Volvo Cars and Volvo A.B. (the truck manufacturer) are no longer affiliated with each other, by the way. Volvo Cars was sold to Ford Motor Corporation, who I believe later sold it to Tata Motors.
run motor and set A/C on max, blower on full, pull a vacuum on the system and recharge with R12a 2.9Lbs