Re: 2008 Aero pinging / knocking- 17k always use premium - Saab 9-5 Bulletin Board - Saabnet.com
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Re: 2008 Aero pinging / knocking- 17k always use premium
Posted by Sam Stoney [Email] (more from Sam Stoney) on Tue, 6 Oct 2009 04:15:08
In Reply to: Re: 2008 Aero pinging / knocking- 17k always use premium, Mark from Toronto, Tue, 6 Oct 2009 00:43:59
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I would assume the way Saab controls knock is by advancing the timing until it gets feedback from the knock sensor and that backs it off slightly - this way it automatically compensates for any/all knock factors. I played with knock sensors on another project, and they require an audible knock to output; anything else would give false signals from other engine vibrations, etc. That small amount of knock doesn't hurt anything, but you can hear it.
posted by 71.184.139...
Posts in this Thread:
- 2008 Aero pinging / knocking- 17k always use premium, scoobypickle, Mon, 5 Oct 2009 20:45:34
- Re: What the dealer said.. fuel additive., scoobypickle, Tue, 20 Oct 2009 07:13:50
- Re: 2008 Aero pinging / knocking- 17k always use premiu, scoobypickle, Wed, 7 Oct 2009 21:24:42
- Re: 2008 Aero pinging / knocking- 17k always use premium, TG, Tue, 6 Oct 2009 03:30:32
- Re: 2008 Aero pinging / knocking- 17k always use premium, Mark from Toronto, Tue, 6 Oct 2009 00:43:59
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