Date: Thu, 03 Aug 2000 15:07:41 +0200
From: Robert Brown <rjbnopsamnetNOSPAM.se>
Subject: Re: engine running rough on acceleration


Hi, Sorry, I wasn't referring to any add-ons. What I meant was that the newer Saabs - and just about any other car for that matter - may just as well have a sticker saying "no user serviceable parts inside". If anything goes wrong under the hood, you've got Buckley's chance of fixing it yourself (unless you have a tech-2 or other diagnostic unit). OK, a bit of an exaggeration, since people in this NG do go and remap their EMS boxes and the like, but it's a real snakepit compared to my beloved 900 from 1983. I guess the bottom line for this particular thread is that ignition problems on a 1985 Saab are easier to grasp than if they'd occurred on a newer car. As for the sound system upgrades, there have been number of postings on the subject during the past 3 months. Maybe someone can oblige you with a reposting . . . Regards, Robert Thomas Myers wrote: > Hi, > > I'm interested in what you mean by 16v tons of electronic stuff. I > recently purched a 1999 9-3 se and I am interested in upgrading the sound > system and wonder if you have any information for replacing the head unit > and such. Please respond if you have any info. > > Thanks > Tom > > "Robert Brown" <rjbnopsamnetNOSPAM.se> wrote in message > news:39893757.75B586E6nopsamnetNOSPAM.se... > > Hi, > > > > A quick story about my 1983 99 car from a few years back: Had a similar > > problem that I cured by replacing the capacitor that sits between the > > ignition coil and the distributor cap. This capacitor is screwed onto > > the left side of the distributor (from the driver's perspective). > > Another symptom cured by the same fix was that the rev counter hopped > > about under hard acceleration. Weird. > > > > Now - for non-turbos at least, the 1983 cars use points for controlling > > ignition; the 1985's use a Hall effect transducer I believe, which mean > > that there may be no capacitor as I described (best you check this). In > > which case pls ignore this mail ;-) > > > > If you're wondering about fuel mix, check the colour of the residue on > > the *old* spark plug electrodes. Should be a greyish brown colour. > > Whiter than that, it's a sign that you may have been running too lean. > > > > Regards, > > Robert > > Gothenburg > > 1983 900 8v carb > > 1999 9-3 16v tons of electronic shit > > 1983 99 8v carb (r.i.p.) > > > > chris ault wrote: > > > > > Been having a problem with my 900. It's an '85, 8 valve no turbo. > > > Engine running rough at high(er) RPMs. > > > > > > For the most part it runs smoothly, but on acceleration (toward > > > 4000+ RPM) there is an all-of-a-sudden significant power loss and > > > it sounds like one of the cylinders is firing out of sync. When > > > this starts, it doesn't stop without letting off of the gas > > > pedal. At worst case this has started as low as 2500 RPM and can > > > make the whole engine really shudder. > > > > > > Also, about this time, there seems to be a lot of backfiring if I > > > downshift toward a stop. I think this is why I've now got a new > > > hole in the front exhaust pipe. (or is it the other way around?) > > > > > > I've replaced ignition plugs & wires, distributor cap & rotor, and > > > set the timing. It was high (25 deg.), I brought it back to 22, > > > then 17. Still no change. Next I'll check the fuel filter and the > > > ignition coil, but I'm fast running out of ideas. > > > > > > Could a soon-to-be-failing fuel pump cause this? What about fuel > > > mix? (haven't noticed discouloured exhaust...). > > > > > > Aside from the rumble from the new hole in the front pipe, at > > > lower RPM ranges, you wouldn't know there was a problem (except > > > for the backfiring). > > > > > > Suggestions as to what else I can check would be greatly > > > appreciated! > > > > > > Regards, > > > -chris > > > > > > Sent via Deja.com http://www.deja.com/ > > > Before you buy. > >

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