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Date: Fri, 24 May 2002 22:20:23 +0000 (UTC)
From: "SimonJ" <Menopsam.net>
Subject: Re: 900 turbo probs


"dave" <nospamnopsamless.com> wrote in message news:ac42d1$gqs$1nopsam7.svr.pol.co.uk... > I am continually having wastegate seizure problems-so generally when service > time crops up it's always on the agenda-this time though,when he freed off > the wastegate he(the mechanic)said he'd not opened it all the way thus lower > turbo performance-I'd rather have full boost so how and indeed should I open > the valve fully. > Im afraid your mechanic hasnt got a clue, opening the valve reduces the boost, it doesnt increase it. You do not need to adjust the valve to free it off, tell hime to leave well alone. It soundls like something your mechanic is diong that is causing the seizure, as it is not a common fault. Also your car will have APC, fiddling with the wastgate setting will affect how the APC can control the boost, in a worse case scenario you could end up with melted pistons (been there) > Further-at 80mph plus I now get vibration thru' car previously not > experienced,again at service mech. informs me of egg in F/N/S tyre,however I > can't find such and presumed tyre eggs were always on wall-could this cause > imbalance and therefore vibration. Yes If you have an 'egg' in your tyre get it chnaged IMEDIATELLY. It is dangerous, and could blow out at any time. > Last,I know the older turbo's smoke-is this usual when decelerating from > speed(when turbo kicks in at higher speed,say 70mph when overtaking and > subsequent deceleration).I'm just a wee bit concerned with the car's overall > performance as it ages and what I should really expect from a Saab built in > 1985 with 155K on the meter,still handles well and beautiful condition for > age. > Its still a baby, expect another 100k and 10 years out of it. Smoke on decalaration is ussually a sign of worn valve guides, not turbo problem.

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