My 94 9000 climate control blower speeds started racing up/down recently. Doesn't matter how the Acc is set (auto/econ, temp etc.) No fault codes come up in diagnostics mode. I read elswhere that the fan motor brushes may be at fault. Looking for ideas to repair before the snow comes! Thanks for any reply.
94 9000 blower speeds racing up/down
Nov 16, 2004
2 Replies
I remember reading about this on Quasimotor's site a few months ago. I think it has to with a transistor pack on the fan motor. I have the same problem and I'm getting ready to replace the Fan and heater core.
Craig
One think to consider if you take the unit out to check the brushes and they are indeed worn, then (a) where might you get replacement brushes from? and (b) if the brushes are badly worn, might the armature be damaged?
I don't know if you are UK based (I am) but I had a blower problem similar to you (although I do not have ACC) and thought of checking the brushes etc. In the end and before I started any work, I got a secondhand blower unit from
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and just replaced the old blower. This cost me 45 GBP including next day delivery. At that price it's not worth thinking about the brushes if like me you just wanted the car back on the road soonest.
Cheers.
SAAB 9000 2.3i, Auto 177,000 miles
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