Re: boost probs - Saab 900 Bulletin Board - Saabnet.com
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Re: boost probs
Posted by Bill S. [Email] (more from Bill S.) on Thu, 21 Oct 2004 21:45:25
In Reply to: boost probs, tom, Thu, 21 Oct 2004 19:27:47
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If the knocking noise that you're talking about is real engine knocking (pre-ignition), your APC system should limit the boost before the knocking gets to the point that you can hear it. You might wanna check your knock sensor, to make sure it's working ok. One way to do that is to tap on it (say, with a socket extension) while the ignition is on (engine need not be running) - you should hear the APC solenoid chatter in response. I'm pretty sure Bentley gives a test of some kind (that's probably more sophisticated) - you should check it out. If your sensor is failed, you could be doing damage to your engine if you're getting heavy on the gas pedal.
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