RE: Blower motor- how to + cost
I did not disconnect my neg battery cable but it's always a good idea. It's up to you.
You can check the blower motor yourself. Remove the cover under the dash, behind the glove box. You will see the blower motor in the far right corner. Disconnect the electrical connector. Now hook a short wire to ground and a long one to your positive battery cable (if you left the battery connected). The blower motor should run at full speed. If it does then I'd bet it's the blower motor resistor gone bad. Replace the cabin air filter while your there. Mine was clogged and the lack of flow killed my resistor.
1976 240 DL
1986 240 GL
2001 S40 1.9T
2005 S40 T5 AWD
You can have it done QUICKLY, done INEXPENSIVELY, done CORRECTLY. Pick any two.