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Crazy knock count??

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Old 07-22-2005, 03:07 PM   #1
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Default Crazy knock count??


I see knock even when the car is off lol.

This is a '93 LT1 with a 383.

The car sometimes rattles when I shut it off. Sound comes from the front of the intake or under the TB. Its not the lifters or rockers. Car surges at idle and sometimes stalls in a puff of fuel from the exhaust. It especially rattles if the idle drops below 700rpm. Its supposed to be 1000rpm.

Any ideas?
'93 Z28. Engine?? Horsepower?? New powerplant coming ?? (All go.)
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Old 07-22-2005, 03:07 PM
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count, knock, pcm

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