Date: 23 Jun 2004 12:06:02 -0700
From: fristnospamt.edu (R. Frist)
Subject: Re: Cant believe it! 1994 Saab AERO 9000 (TURBO) - Smoke problems after replacing head gasket- NOW IT IS THE TURBO!!


"Fred W." <Fred.Willsnospampam myrealbox.com> wrote in message news:<FrydnbBiDcvH-UXdRVn-jgnospamphia.com>... > "FEDUP" <FedUpnospamail.com> wrote in message > news:6PLBc.5530$1F6.3609nospam.usenetserver.com... > > I posted earlier > > "This is a 94 Saab (Turbo) AERO 9000 with 125K miles. I have replaced the > > headgasket couple of weeks ago. Since then white smoke (oil burning) comes > > out when the car comes to a stop or when it is starting. " > > Here is what happened since then- > > The mechanic diagnosed the problem as a turbo leaking oil into the > exhaust. > > As we send out the turbo for a rebuild- the guy says- cant be done. A new > > turbo unit (Garret TB25) costs $660. > > They say that these turbos get shot when the driver does not idle after > > coming to a stop and park. Apparently, according to him, when you pull > into > > the garage or a parking spot, one needs to let the engine idle for a > minute > > or so before turning it off. This- I have never heard. The instruction > > manual does not say anything like this. > > Find a new SAAB wrench. This guy doesn't know what he is talking about. > You do not have to idle for the turbo to cool down since they started water > cooling them, many years before your 9000 was built. The turbo failure was > likely caused by your prior overheating incidents. > > > I am so pissed off- I have spent $1500 for head gasket job- looks like the > > turbo fiasco is going to add another $1000. This car already has 125K > miles. > > Is this really worth it? What has been your experience with this car? > > Yes. Find another specialist and get a turbo installed, then make sure it > doesn't overheat anymore. > > -Fred W Are you sure its oil that is burning? White smoke usually means coolent. Starting somewhere around 1990 Saab started using water cooled turbo bearings and they stopped telling drivers to let the engine idle for 30 seconds before turning it off. Before that only the oil supply cooled the bearing and if shut down hot and spinning the oil tends to caramalize. It is still a good habit to let the engine idle a bit before shuting down. This gives time for the turbo to spin down before the oil supply is cut off. Good luck and I belive there are rebuilt turbos somewhere. R. Frist

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