Date: Wed, 15 Aug 2001 16:17:08 +0100 From: Paul Halliday <paul.hallidaynopsamin.net> Subject: Re: Turbo meter
in article tndks9i4qkoq86nopsamupernews.co.uk, Vince at amosnopsamalnet.co.uk wrote on 12/08/2001 20:10: > Hi > I have just purchase a saab 9000T (1990), when I test drive it, the turbo > meter would only go as far as the end of the green start of the orange, but > never pass that mark even if the accelerator was hard to the floor. The > engine was revving almost to the red but the turbo meter stayed on the > dividing line between the green and orange. The car never felt as if it was > a turbo, I suspect this may be a fault dump valve, any ideas > Vince High (red zone) revs and no turbo is NOT good. For some reason, your turbo is not delivering the high torque/low rev power that Saab are renowned for. On my 900, my first problem was a dead APC box (only 50 UKP to replace). Once this was replaced, full turbo was possible - for obvious reasons. My second problem was a faulty break sensor sending a brake signal to the APC, which limited turbo boost. Replacement of this (less than 10 UKP) fixed this as well. It could be your APC solenoid valve - testing this is a doddle. Disable the wastegate (pull off the middle pipe) and go for a run. If you can achieve full turbo, then the APC solenoid valve (or the APC) box is duff. On the pessimistic side, your turbo-charger could have siezed ... Good luck, Paul
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