You need a new switch. I just went through this with my front blower.
Got my switch from Camelback VW in Phoenix, AZ.

To replace the switch, heat the plastic knobs on the control levers,
then carefully pull them off. If the plastic knobs are not really soft
you will v=break the little tangs that hold them on. I learned the hard
way. Once those are off, the panel over them that also holds the switch,
can be popped out to the dash. Easy from there.

John Rodgers
88 GL Driver

Clarence J Falarski wrote:
> Good morning all.
>
> !990 Multi front heater fan would work at it's own convenience stopping when it was in the mood then starting when it was ready. A mind of it's own you might say.
>
> After checking the fuse last evening it was running fine then all of a sudden it stopped and will not restart at any speed.
> Any suggestions or ideas, on where or how to start the surgery.
>
> Regards to all.
> Clarence.
> Pinehurst. NC.
>