Date: Fri, 29 Nov 2002 08:08:01 -0000
From: "Andy Hookins" <>
Subject: Re: 9000 Aero cutting out

Murphwiz could be right on the money - do a google search for 'My dealer hasn't got a clue, can you help? ('97 9000 Aero, Manual)' to get the full story. In summary, the symptoms described were similar to yours, the dealer replaced the ECU, dump valve,turbo, wastegate actuator BPC, head gasket etc. etc. (fortunately for the owner this was all under warranty). In the end they tried a new DI cassette - problem sorted (this whole process took months). In case your wondering what the DI cassette has to do with boost control, it used to measure cylinder conditions - knock etc. If the sensing is wrong then anything could happen. see this link for a description: Turners hill garage (tel: 01342 718799) were selling new DI cartridges very reasonably a while ago (I think GBP 95 + VAT but this may have been a limited offer): Alternatively try one of the specialist breakers like Neo brothers or PartsASAP for used parts - although I'd question the wisdom of getting an old DI cassette since they are a known problem component. Another likely candidate is the BPC valve as Toby Field suggests. Either way I would try talking to your dealer nicely - or find a local SAAB specialist and see if they will lend you a DI cassette and or BPC valve - the dealers have special blue diagnostic cassettes, my indy has a spares also just for this kind of thing. Good luck with the car and job hunting. AndyH "murphwiz" <nutz76nopsamternet.comUHOH!> wrote in message news:as5mhp$gd1$ > > <> wrote in message > news:lOnF9.79$ > > I have a 97 9000 Aero with 50,000 miles. > > > > It has a larger dump valve. Apart from an ITG air filter, there are no > other > > engine mods. > > > > 1 month ago, it stopped accelerating into the red on the APC, and was > > sluggish. > > > > I put the original dump valve back, and it cut out under HARD > acceleration. > > It then > > carried on, giving the impression of a kangaroo hop at 75 mph. (very > cool). > > This happened > > in every gear, and at various revs, but only happened when I "floored" it. > > > > I went to my local Saab main dealer, who put a brand new dump valve in, > and > > it > > only cut out 1 in 5 times. They said I have overboost ? > > > > I put my old performance dump valve back, and it now whistles, before > > cutting out > > It still has overboost under hard acceleration, but its fine under normal > > acceleration. > > > > The fuel is also down to 300 miles per tank. > > > > I have been in touch, but the main dealer have no idea, and want the car > for > > 2 days > > to run tests. > > > > I have just lost my job, so any ideas would be appriciated, as I cannot > > afford 60 + per hour > > for Saab to diagnose this. > > > > Many thanks. > > > > Ian (UK) 97 Imola red 9000 Aero > > Sounds like the DI cassette to me.. > but any saab dealer should be able to spot that a mile off... > > >

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