dumping boost problem - Saab 9000 Bulletin Board - Saabnet.com
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dumping boost problem
Posted by AnnieG [Email] (more from AnnieG) on Wed, 22 Dec 2004 20:31:44
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Hi board,
My 1993 Aero is doing a weird thing--when you accelerate hard, it will boost up into the orange part of the gauge pretty readily, but then it dumps it kind of in these quick bursts. You can see the boost guage kind of drop a tiny bit each time it dumps, and you can hear it. It sounds like the wastegate letting off excess pressure only it is short, fast bursts instead of one bigger one. Performance is not noticably affected unless you try accelerating very hard, but even then, it's not really too obvious--you just can't get quite as much boost as usual.
About 9 mos ago I had 2 valves done, the hooter valve and check valve for a TCS problem, so I don't think those are possible culprits.
Anyone else have a similar problem and find a solution? Any ideas about where to start looking would be appreciated.
Thanks in advance
Annie
posted by 65.110.234...
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