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The Saab uses the spark plugs to sense the spark knock. Did they change them at the 90k service? Perhaps the type they put in do not work as well for sensing knock as the old ones. I am sure you can search the board and find a recommended plug type.
The idea of running Techron through is a good one too.
Change the plugs, run the cleaner and see what happens.
A little pinging is OK, but adjust your foot when you hear it as prolonged pinging will cause issues.
Drive Safe,
Joe
posted by 64.238.4...
Posts in this Thread:
- 1999 9-5 Wagon Knocking, Wendy H., Wed, 9 May 2007 19:18:36
- Re: 1999 9-5 Wagon Knocking, 8AA2YM, Thu, 10 May 2007 07:44:15
- You may want to replace the knock sensors, Joe
, Thu, 10 May 2007 07:32:05 <-- Viewing This Message - Re: 1999 9-5 Wagon Knocking, SeeVTSaab, Thu, 10 May 2007 05:29:42
- Slight pinging normal...., LesH, Wed, 9 May 2007 20:04:55
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