2008 Turbo-X Engine Knock? - Saab 9-3SS Bulletin Board - Saabnet.com
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2008 Turbo-X Engine Knock?
Posted by Dave Chicago (more from Dave Chicago) on Thu, 26 Sep 2013 09:02:59
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A month or two ago I had engine knock when accelerating hard, CEL, limp home, ignition off, reset and the Indy shop found a fuel pressure error code. A month or two before, same symptom, but ignition coils. After the shop reset, I drove for a while, CEL didn't come back on, but I didn't punch it, either. Routine service light came on, so since the car was going back to the shop, I put in octane booster to test. I couldn't get any engine knock. Before I was using 93 octane. Now, on my modified C900 I could boost into the red and get no engine knock because there was a knock sensor that would back off boost. Does a 9-3 V-6 have a knock sensor and computer to back off boost?
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