Date: Tue, 27 Apr 1999 11:57:54 +0300
From: "Roy Björkstrand" <nospamroilonopsamut.fi>
Subject: Re: Problems with idle on classic 900i


David Summers wrote: > Very useful advice from this newsgroup regarding my 9000S clutch problem...I > bit the bullet and took the car to the Saab garage who seem to have done a > pretty good job ( which I suppose they ought to for £360) > > Our other Saab, a 1990 900i has a more chronic problem. Every few months the > idle slows and becomes irregular, to the point where it stalls frequently. > This has gone on for a year.The garage can fix it for a short while, and > then it comes back. They say this is a 'characteristic' of the car and that > it can't be cured, which I find rather surprising - has anyone come accross > this before and do they have a solution? Otherwise the car runs fine. First I´d like to say that if your mechanicns say that stalling is "characteristic" - change your mechanic. As leon wrote it could be air intake cut-off valve (silvery thing located "on the top of the engine", two 1/2" airpipes+electr. wire). When it is dirty etc. it is usual that the idle goes up and down from 600rpm to 1200rpm. Also stalling could happen (not for me, but possible I think). You might also want to check your spark plug wiring. Specially in older models they cracked and the spark was between the heat shield and the wire instead being inside the sylinder. This shouldn´t cause irregular idle, but might be a part of the stalling (bad idle + 3/4 spark -> stalling). Roy

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