Doesn't the turbo spin all the time? - Saab NG900 & OG9-3 Bulletin Board - Saabnet.com
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Doesn't the turbo spin all the time?
Posted by RBatsch [Email] (more from RBatsch) on Thu, 26 Feb 2015 12:14:43
In Reply to: Re: Dead engine?, Ron, Wed, 25 Feb 2015 15:57:36
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I thought the turbo was spinning all time that the engine was running but the boost is dumped when not needed??? I would think that it would have to spin to allow the engine to draw air on the co press or side?
As others have said it doesn't sound good and is probably not the turbo unless it too is now damaged from low oil pressure. I'm surprised that the knocking didn't show up in your pre-purchase test drive, unless of course your car is leaking/using oil rather quickly. Not sure why the car won't run when put in gear now and if that's related to the knocking? Perhaps one cylinder isn't firing? Best to have it towed and checked by a mechanic that's familiar with SAABs.
Best of luck.
posted by 65.93.69...
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