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Date: Fri, 06 Jun 2003 23:00:45 -0300
From: Dexter J <lamealameadingdongnopsamlamelame.org>
Subject: Re: Strange question but I have to ask


Salutations: "Fred W." wrote: > > "Brittany" <LauraJ2Bnopsamcom> wrote in message > news:1f89245c.0306050818.70224a97nopsaming.google.com... > > I wrote here before and everyone was so kind and some of you even sent > > me direct emails. > > > > I have a 9000 CD 1989 Sedan and I notice when I am driving on the > > highway that it seems to lose speed. It almost feels like its > > changing gears ( yes it is Automatic). Anyway per a friends > > suggestion I added to the tank a bottle of dry gas. This seemed to > > fix the problem as I did not experience any of the bucking or slowness > > problems for a month. I was sooo happy and I could hit the gas and it > > would fly.... > > > > Unfortunately the drop down in speed while I am driving is starting > > again. So I wanted to know if adding the dry gas really did help and > > if so what is the reason the dry gas helped. I want to know if there > > is something that I should get fixed that the dry gas temporarily > > fixes. > > Sounds like you might be getting some misfiring. Does your 9k have DI > (Direct Ignition)? If so, step one should be to replace the spark plugs > with the correct NGKs called out for that engine. If not, it could be > plugs, plug wires or distributor cap or rotor. > > -Fred Check for oil leak running along on the bottom of the distributor cap (if so fettled).. Google alt.autos.saab for - violent bucking - as I think I've posted some guff about it on my own 89 9000T CD.. It turned out to be a .10 cent o-ring.. If you are grounding a wire to the block with even the lightest film of oil - it'll misfire and the engine management system will read that as a knock and, correctly as far as it's concerned, shut off the fuel momentarily - under boost is where you get that bucking 'thang.. If you are running DI - then there is nothing to do but replace the unit as I gather it's doing much the same sort of thing engine management wise.. It will save the block, piston and crank because it's cutting fuel across the whole rail to stop the whole engine when one or more holes misfire.. While it's a huge pain in the ass - it tears up your mounts instead - it actually makes some sense in that it is hard to chew up a particular piston over time - which is usually what happens to older port injected motors without advanced engine management.. After that - check for NGK's as suggested, check the air filter and if you've been getting great and/or lousy mileage lately - check your fuel pump and injectors.. However, as it may be that dry gas did it's job (someone said it was for clearing up water in the tank) - I'd looking around the top of your fuel tank with a mirror on a stick and around the fuel pump looking for rust or broken gasket.. Happy motoring - if you are messing around the fuel tank - be very careful about the electrical connections and try to do it with the doors and trunk open on a windy day.. Disconnect the battery - but you will need to have your radio codes if you want to use the audio system again sometime.. -- J Dexter - webmaster - http://www.dexterdyne.org/ all tunes - no cookies no subscription no weather no ads no news no phone in - RealAudio 8+ Required - all the Time Radio Free Dexterdyne Top Tune o'be-do-da-day Queen - Fat Bottomed Girls http://www.dexterdyne.org/999/063.rm

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