Knock-knock--- w/ video - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 09-04-2006, 12:03 AM   #1
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Default Knock-knock--- w/ video

i am hearing a slight knocking noise at idle, the knock increases w acceleration.
what am i in for?
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Old 09-04-2006, 12:07 AM   #2
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Has it been getting worse? And a little more info would help narrow it down.
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Old 09-04-2006, 12:19 AM   #3
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no, it has not been getting worse. i took it into the dealer a month ago
cause the tensioner pulley broke and the belt needed to be changed.
didnt here the knock before.....
took it back to the dealer they took a look at it and said they didnt know what it was
it wasnt anything they did. pretty much gave me the run around.
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Old 09-04-2006, 12:26 AM   #4
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can you vid it ?
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Old 09-04-2006, 01:06 AM   #5
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i will get it in the mornin
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Old 09-04-2006, 01:12 AM   #6
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Does it go away after the car warms up? ~Exhaust leak...
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Old 09-04-2006, 11:31 AM   #7
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If the sound is coming from the bottom front, it could be the harmonic balancer starting to come apart. If so, best to change it before it takes out your crank sensor.
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Old 09-04-2006, 12:09 PM   #8
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it is coming from the pulley side. maybe from one of the lower pullies..
here is a vid..

http://media.putfile.com/knock-45
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Old 09-04-2006, 08:33 PM   #9
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Could be your idler pully going out.
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Old 09-05-2006, 08:58 AM   #10
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they have all been changed...
does any one else have any ideas?
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