Date: Fri, 19 Dec 2003 14:44:06 -0600
From: LanceM <>
Subject: Re: 92 900S rough at 3000 rpm

John Anderson wrote: > Greetings fellow Saab'ers. > > I have a problem that I would like to get some advice on. > > I have a 92 900S 16v with 86K on the clock. It is an > awesomely fun car to drive - which I do daily. > > Just this past week, I noticed that when I try and run > at a constant speed and the engine is turning over at > 3000 RPM, the engine acts as though is caught in a > mini-accelerate - decelerate cycle. Moving the engine > RPM's up or down 200RPM causes the engine to run smoothly. > I have no hesitations when accelerating through 3000 RPM, > only when running at 3000 RPMs. > > I am befuddled. I am running some STP fuel injector cleaner > through this tank and will see if that changes anything. > > Has anyone ever seen this issue. If you have, what did you > need to do to correct it? > > Thank you. > > John > Atlanta, GA > 92 900S (my first Saab) -- Is this an manual or auto? I have a similar issue w/a 91 900S 5spd (also LH 2.4.2), that has been to two master Saab techs w/o resolve. I'm attempting DIY. I can provide some suggestions, pending if you want to DIY and/or what tools you have Have you checked your Throttle Position Sensor for drop-out? Lance ---------

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