Date: Fri, 29 Jun 2007 02:38:10 +0100 From: "Charles C." <c.k.christacopoulos.removeme.nospamee.ac.uk> Subject: Re: Misfire any thoughts
johannes wrote: > > "Charles C." wrote: >> Charles C. wrote: >>> Hi, >>> >>> The car is 9000, 2.0 LPT, year 1997, 100K miles on the clock. >>> >>> It showed some random misfire a week or so ago. Two days later took it >>> to the SAAB dealer who could not fix (not enough time), but replaced >>> some split rubber pipes relating to the turbo (?). They think the >>> misfire relates to the turbo, as it does not supply high enough boost. >>> >>> At the time the misfire was only when the engine was under load and >>> gentle acceleration (town driving). >>> >>> ============ >>> >>> The car is booked to go back on Tuesday (by which time it may well need >>> a new catalyst... that will become an email of its own if it does). >>> >>> The misfire now happens after about a mile from cold (or a bit sooner) >>> and it happens even when the engine is idling. I can't see what this >>> may have to do with the turbo. >> If it helps anyone out in the future. >> >> On 2nd take all problems pointed to fuel starvation which could be >> caused by a vacuum leak (hence the engine would cut off fuel). The car >> became difficult to accelerate but reasonably happy to run with a few >> misfires at a steady load. >> >> However, it was the Direct Ignition cassette that was faulty. On 2nd >> visit to the dealer they chanced that this was the problem. I had done >> 380 miles with the misfire. The catalyst apparently survived. I am >> happy to settle for half the SAAB Experience. > > 1. Direct Ignition systems are also used by other manufacturers. Yes. > > 2. They last over 60k miles and replacement is a simple DIY job, in > fact simpler than changing the air filter (which is tricky on a 9000). Yes. Not sure what you are trying to say. Are you trying to defend SAAB? I have not complained. Sorry if I read your message the wrong way. I am talking about symptoms and how to possibly diagnose the fault if someone has the same symptoms sometime in the future. Whether the fault is a good or a bad thing or if we should replace the cassette at 60K miles as a service item is not something I am passing comment on. :-) Charles -- Please remove _removeme_ to reply.