Date: Tue, 15 Jun 1999 22:29:16 +0100
From: "Paul Aspinall" <>
Subject: Re: APC GAUGE

Hi Dave I had a similar problem on an '89 9000 Carlsson. The boost guage should just touch into the Red area. You are getting 'Basic Boost'. My problem consisted of checking everything, various trips to SAAB specialists, and much reading before I eventually sorted it myself. Try the following: 1). Borrow a Turbo solenoid from another 9000 Turbo. This is the Black unit that has 3 vacuum pipes going to it, and sits near the radiator. If you change this, this is VERY likely to solve the problem. They often go wrong, and is the most common reason for getting basic boost 2). Check all vacuum pipes are connected and do not have leaks. If necessary replace some of them, they're very cheap. 3). Check the Knock detector on the Engine block. Try another one and see if it works. 4). Check Cruise Control. When the cruise is engaged on the early 9000's, boost is limited to basic. ie mid-way into the yellow. 5). Unplug the ECU from under the passengers seat, and spray the connections with WD40. This was the problem with my unit. A small amount of rust had developed on the connectors. I tried everything, and it was just a bad connection in the end. Let me know how you get on Regards Paul DAVE LEE RALPHSON <> wrote in message news:7k6et4$fuf$ > hi gang > can anyone tell me how far the needle on the turbo boost gauge should go. > mine will only go just past the half way or just past the middle of the > yellow section even with my foot to the floor. as I only have had the car 3 > months I don't know what is the norm > car is a 91 9000se auto > > thanks people > Dave > > >

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