Date: Wed, 24 Nov 1999 16:44:40 -0800 From: "RWS_1" <RWS_1nopsamail.com> Subject: classic 900T early waste gate dump
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