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Date: Fri, 04 Jun 2004 23:12:20 +0100
From: Johannes H Andersen <johsnospamfitter_spam_gets_fried_don't_tryit.com>
Subject: Re: saab 9000 se Cooling Fan only runs Hi Speed


Johannes H Andersen wrote: > > Stevie_mac wrote: > > > > Any one know where I can a schematic to help me suss out a problem with a Saab 9000. > > > > I have replaced the 3-wire radiator fan switch but still no Low Speed operation. > > > > If I short the blue wire on the Fan Switch to ground, the fan runs low speed as expected. Could this be a dodgy fan > > switch? > > Yep that one I know, age old problem - mine as well...twice... > > You can either buy & fit a new resistor pack part ~£50 or try to repair > it. This time I'll repair it, the resistors in the pack looks fine, so I > think it's the high current diode in the pack. Somewhat tricky to repair > since it's a hot component, so soldering may not be appropriate. > > Other makes of cars suffer the same problem, the resistors in the > resistor pack are of insufficient wattage and must therefore be > cooled in the blower housing. Oops, I should read posts before answering...

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