Date: Fri, 15 Aug 2003 21:35:32 -0400
From: "saabrepair" <>
Subject: Re: 85 900S Very Poor Acceleration (bucking)

"W4murdza" <w4murdzanopsamom> wrote > > 85 900S 5 speed 190K > > First noticed a hesitation (bucking) during a drive yesterday. The bucking > would increase going up inclines and get much worse accelerating from a stop > More like bucking then than a hesitation had to clutch to stop the bucking and > coast a bit and very slowly accelerate. OK starting, at idle and at 55mph on a > flat road or a slight decline. > > Changed the fuel filter, plugs cap & rotor a few months ago. Wires Ok. > Fueled the car the day before and drove several miles. No problems noted. > > My first thoughts are the fuel pump is begining to fail, low fuel pressure or a > failing ignition module causing a very weak spark. Any advice would be greatly > appreciated in troubleshooting. > > Jim > I'd bet on the fuel pump myself, but check all your vacuum lines first.

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