Date: Sat, 27 Nov 1999 12:48:49 -0800 From: "John R. Weiss" <jrweissnopsamet*nospam*.com> Subject: Re: classic 900T early waste gate dump
Possibly a batch of gasoline with too low an octane rating? How often is "occasionally"? When did it start, and how many tanks of gas have you gone through since then? ----------------- John Weiss Seattle, WA remove *nospam* from e-mail address for reply RWS_1 <RWS_1nopsamail.com> wrote in message news:uGGwv8tN$GA.348nopsamnbbsa02... > 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?