blower switch rebuild possible?

The blower switch only seems to work on the max setting. Every once in awhile the blower will randomly work correctly . The ac compessor co.es on at all settings and the air inlet doors do as well. It just seems the blower motor is unable to vary speeds.

 

Buy another switch.

 

Resistor block?

 

where is this part located? I sprayed nearly every connection in the car with electrical cleaner and then hit it with some fluid film to keep out any possible corrosion.

 

Many cars have a sep part mounted near the fan. I cannot say if that is the case here or where it is located. A faulty one might explain your problem and if so a switch will not fix it.

 

Check blower motor resistor mounted into air box near blower motor.

 

I don't have a manual (or a car!) to check and take nice pics but here are some posts that could help:

http://www.v8buick.com/showthread.php?251338-What-is-the-Heater-Resistor
http://www.v8buick.com/showthread.php?235944-Blower-Motor

 

X2 on the switch. its contacts are probably corroded

 

Thanks for all the help. I am going to check all of these thoroughly tomorrow.

 

Sounds like it maybe the switch...

I would check the blower relay also...


NAPA part number AR100

the plug is part number ARC100