Date: Sat, 31 Jan 2004 21:02:05 +0200 From: Vesku <vtmNO_SPAMnopsamoint.net.invalid> Subject: Re: 9000s 1989 with strange problems
Jeremy wrote: > Saab 9000S 1985cc petrol with Bosch fuel injection. > Symptoms: intermittent misfire with associated loss of power > and increased fuel consumption. Usually occurs a few miles > after starting from cold - most noticeably under acceleration, > particularly below around 2000 rpm. No problem starting. > Misfire can be absent for a day or two at a time. > > Actions taken so far: changed rotor arm, distributor cap, plug > leads; put in new spark plugs, blown out fuel filter, put jet > cleaner in fuel, and checked timing. Further possibilities I > can think of: water in fuel, choked tank breather. Anyone got > any more? > There are lots of possible causes, some listed here - distributor vacuum advance not working correctly - ignition module, ignition pulse amplifier (does tacho remain steady or begin jumping down to 0 when problems ?) - turbo pressure limit switch - fuel injector pressure regulator - air mass meter I have had similar problems with -85 and -88 turbo models, caused by distributor rotor and ignition pulse amplifier. br Vesku
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