Date: Sat, 7 Nov 1998 14:08:24 -0000
From: "Paul Aspinall" <>
Subject: Turbo Boost

I have a 9000 Carlsson '89. I have had a problem with obtaining full boost for some time now. I have changed the Turbo solenoid (on the radiator), the boost pressure regulator(under dash), had the system vacuum tested, replaced the knock detector, DI Unit, and changed the thermal check unit on the engine. However I am still getting only basic boost. When I disconnect the top vac-pipe from the turbo solenoid(on the radiator), I get full boost!!. I believe this shows that mechanically everything is ok??? Does anyone know what else I could try?? When I changed the knock detector, it seemed to improve the situation, however, the problem is back. I have tried another knock detector, and still the problem persists. Does anyone have any ideas?? May it be a loose wire somewhere? or could it be machanical Thanks in advance Regards

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