Date: Tue, 11 Sep 2007 19:14:00 +0100 From: Piers <pierskenneynospamscali.co.uk> Subject: Re: 96 9000CS - Whining sound from Automatic Trans.
SilverSurfer wrote: > Good morning, > > My 1996 9000CS has developed a whining sound that is coming from the > Automatic Transmission. > The car has 176000km, the transmission is original. > I know these cars have some auto trans. issues but but the only change I > have noticed is the downshifting is a little bit slower and rougher than > usual. Otherwise the it functions normally. > > Any assistance would be appreciated (especially links to sites dealing with > 9000 Auto transmissions.) > Thank-you > Kirk R. > > > Hi Kirk, If you've not already done so, replace the transmission oil filter and change the transmission oil (aka automatic transmission fluid or Dexron). Without special equipment you can only get around 4 of the 8 litres out at any one time so if the fluid that comes out looks dirty or dark (should be pinkish-red) run the car for a few miles and change some more (with every change you are diluting the old oil). With the last change add some "Lubegard Red" to the oil - that's the only (as far as I know) additive that Saab ever endorsed for this transmission. It was prescribed for a particular whine in the transmission. If you go to www.lubegard.com you can find a copy of the Saab bulletin. Two other more time consuming but fairly inexpensive fixes are failing governor seals (can be replaced without removing the trans) and a broken accumulator spring in the valve body (again this can be replaced in situ). Beyond those, I'm not sure, other than taking the car to a specialist who knows ZF transmissions. Where are you in the world, Canada? Hope this helps. Piers