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Date: Tue, 30 Nov 1999 19:00:08 -0000
From: "Gareth Thomas" <gareth_thomasnopsamom>
Subject: Re: classic 900T early waste gate dump


I experienced similar symptoms with my 9000-T one time on holiday. I located a dealer who wanted to replace the Direct Ignition unit (expensive). I wasn't convinced, and suspected the solenoid valve myself. Once I got home I went to my friendly local dealer who simply adjusted the mechanical bypass valve and solved the problem. RWS_1 wrote in message ... >88' 900Turbo spg - Garrett > >When I step on it, I think the waste gate seem to be opening prematurely. >The turbo gauge only comes up half way in the yellow zone instead of to the >top of the yellow. The engine runs smooth except for full throttle or mid >boost range. It occasionally runs perfect when full throttle is applied, >full boost is indicated at this time. Occasionlly at ideal, the (three >vacuum line and two wire) solenoid valve mounted next to the coil has >chattered (opened and closed rapidly like it's confused). The solenoid >valve passed the "Haynes" shop manual test. >I believe the APC could be sending a bad signal, maybe a bad knock sensor. >Does anyone have any ideas or experiece with this? >Thanks > >

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