Air Condition

[Lyrred]

Hey, my air condition works great, but im having a slight problem. Sometimes it will only blow on setting #4.. At times it will blow on the other settings but it would stop and would not go again unless i put it back on 4. Last night it worked perfectly with the setting on 2 for the entire night. Any help would be appreciated, thanks.

[Hartge_H27]

sounds like the reistor on the blower motor

[Lyrred]

thanks, is there any way i can check it or get to it?
car is an 87 325is

[Jean]

In the engine bay, behind the cover on the firewall where the blower fan is located.

[Lyrred]

Thanks guys. It was the resistor board on the blower motor... It needed cleaning. WD40 did her well.