Re: Strange question but I have to ask

I am not a mechanic, but does it ever seem like you are assuming this is
a complicated (read: expensive!) problem. Since the ethanol seemed to
clear up the problem temporarily, the first thing I would do would be to
check for water in the gas tank, then start fueling at another place or
use a different grade of gas.


Dave
'03 9-5 Arc

In article <3EE1474D.8769AA1C (AT) lamelamelame (DOT) org>,
Dexter J <lamealameadingdong (AT) lamelamelame (DOT) org> wrote:

Salutations:

"Fred W." wrote:

"Brittany" <LauraJ2B (AT) aol (DOT) com> wrote in message
news:1f89245c.0306050818.70224a97 (AT) posting (DOT) 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..

--

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--
Dave Rowsey <drowsey (AT) earthlink (DOT) net>