The car in question is an '85 300DT.

The blower has been acting up....sometimes blowing hard and sometimes not at all. This up and down behavior happens in all button modes. So I took out the blower itself and cross referenced (installed it) in my TD which has the simpler design. Blower works fine with no dead spots.

Therefore, am I right in thinking that the message going to the blower is getting screwed up?

Where do I start?

Thanks

Don

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DAILY DRIVERS:
'84 300DT 298k (Aubrey's)
'99.5 Jetta TDI IV 251k (Julie's)
'97 Jetta TDI 127k (Amber's)
'97 Jetta TDI 186k (Matt's)
'96 Passat TDI 237k (Don's
'84 300D 211k Mint (Arne- Undergoing Greasecar Conversion)

SOLD:
'82 240D 229k (Matt's - Converted-300DT w/ 4 speed