Date: Thu, 07 Aug 2003 15:04:16 +0100 From: Grunff <grunffnopsam.com> Subject: Re: Misfire! Saab 9000CS LPT Auto 1993
Jeremy wrote: >>I'm posting on behalf of my brother who's Saab is having major >>spluttering / misfire problems. Misfire seems to only happen when the >>engine is at normal temp and not when cold. It's like the engine is not >>running on all 4 cylinders but sometimes it will be running ok without >>misfire and then all of a sudden without warning the engine dies and >>will not restart. Leaving it a few minutes it then starts again. It's >>had new plugs & air filter and even tried another Di cartridge but with >>the same results. Grateful for any tips as to where to look first. A >>bit puzzled as it only seems to happen when the engine's warmed up! > > Have the HT leads been changed? No HT leads, uses a DI unit. This would be my first suspicion - the DI unit. Get it checked out, or swap it for a known working one. Next thing would be the injectors. Check that non of them is sticking. -- Grunff