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Date: Thu, 27 Feb 2003 10:33:24 -0000
From: "Pete Bennett" <petenospamle.demon.co.uk>
Subject: Lumpy engine 9-5 2.0 LPT


A Saab dealership has just given me my unfixed 9-5 back again. The engine stutters when accelerating from 2,000 to 3,500 revs. They have replaced the ignition cartridge. They have reprogrammed the engine management computer. They replaced the spark plugs. They have replaced the whole engine management computer. They replaced a damaged 'O' ring on one of the fuel injectors, this helped sort out the loss of performance at the top end, but not the lumpy acceleration from 2,000 to 3,500 revs. They invited a regional engineer to look at the car. He looked, he drove, he heard that one injector was over fuelling (210 rather than 175ml, the other three were about 170) so said replace all the injectors. They have replaced all the injectors. They have checked the valve timing. They have checked the compression. They have had about five or six goes at fixing this, with e-mails apparently going to and from the regional chap, and to and from Sweden. Since they have also failed to fix a 'groink' noise from the front suspension every time the car goes over a speed-bump, I have no faith that they will fix it without some other help. So, please HELP!?! What's wrong with my car? The only thing I can think of is that it might be some kind of failure to produce enough vaccuum. Originally the car had a _VERY SERIOUS_ problem with the brakes, where the pedal went hard, and had next to no braking effect. A friend of mine said straight off that it was a lack of vaccuum. Saab Manchester had five or six goes at fixing this potentially terminal problem, and eventually, with Sweden's help, fixed it by adding a second vaccuum pump around the servo. I think that lacking vaccuum can damage the low end performance (it certainly harmed my kit car engine, so that I had to have the camshaft replaced with a less radical one, just to boost the vaccuum at low revs) Pete Bennett Serial Saab owner, but I think this might be the last. p e t e at d s p s dot n e t or p e t e at d i g g l e dot d e m o n dot c o dot u k

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