Date: Mon, 04 Feb 2002 10:19:49 GMT
From: "omni12" <>
Subject: Re: 9000 intermittent rough idle/stalling

i had a 1993 saab 9000cs, that acted as u described. then just would no longer start. checked the usual checks, to make sure it was electrical related, sprayed qucik start in intake manifold, would start then cut off. will took to the saab shop, turns out the fuel pump was on it's last leg. at the time the car had about 118,000 miles on it. so, perhaps u can have the pump tested just in case. if it is good great, no loss.. but, if going bad... can save u some woes.. cheers.. let me/newsgroup how it goes.. mike 1993 saab 9000cse 2.3 turbo 1993 saab 9000cs 1981 saab 900s danny <> wrote in message > Hi chaps/chapesses > > Recently my 1990 9000CDS (non turbo) has been idling erratically. It > comes and goes, and when it doesn't do it it runs absolutely fine, but > the next time you get in the car the idling speed can be all over the > place. Actually it tries to idle at 900rpm, but keeps rythmically > dropping to nearly stalling then recovering, and after a while it will > just stall. Coupled with this is the fact that it now nearly stalls at > speed under gentle acceleration, at any speed - you can be driving along > and the engine cuts out momentarily then recovers. At lights I have to > keep the revs up so that in the dropping phase it stays high enough to > not stall. > > The only thing that has changed on the car recently is that since having > a new front exhaust pipe fitted (flexible section from downpipe to cat) > it has leaked from the downpipe connection and had to be retightened > twice (each time blowing the gasket). Currently there is a very small > blow from the join. I checked the engine mounts as a possible source of > why the new pipe wouldn't stay connected, but there is no movement in > the engine as far as I can tell. Is it possible that the lambda probe > possibly getting wrong air measurements due to the small exhaust leak > can have this effect on idling? I have checked for vacuum leaks by > sight, all seems fine. Any other suggestions? Thanks. > > -- > Regards, > Danny > > (a purely hobby site) > (UK advert for my mobile espresso service) > swap Z for above characters in email address to reply > > >

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