knock sensor - 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 04-08-2010, 08:46 PM   #1
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Hi everyone. I just picked up a 94 Bonneville with 160,000 miles bought "as is" from a local used car lot. The Service Engine Soon light was on and he pulled the code for me and it said knock sensor. He said its nothing to worry about. Any thoughts on this, will this cause the computer to retard timing and lead to a loss in power? The car seems alittle sluggish for having 170hp although it could just be the high milage although it doesn't smoke or anything. Any help is appreciated,
Eric
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Old 04-08-2010, 08:48 PM   #2
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I would suggest changing it. It'* there to protect the engine. You will need to drain the coolant, or be ready to get wet. Make sure it'* torqued at the exact amount, no more, no less.
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Old 04-08-2010, 08:55 PM   #3
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14 foot pounds, do not use any thread tape or sealant on the threads.
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Old 04-09-2010, 12:20 AM   #4
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It'* a pretty simple task does it tell you bank 1 or 2?
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Old 04-09-2010, 07:10 AM   #5
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I agree. Change out that knock sensor.
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Old 04-09-2010, 08:41 AM   #6
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Mike..please confirm that torque spec. I know 14lbs is the S2 motor, not sure is S1 is the same. Thanks
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Old 04-09-2010, 08:41 AM   #7
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It didnt say anything about which bank, I was told it was on the passenger side though
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Old 04-09-2010, 08:44 AM   #8
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If memory serves me right. S1 had a single sensor.
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Old 04-09-2010, 12:30 PM   #9
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I forgot my S1 S2 switch when was that again. Hmmm if it'* S1 he might not get that wet.
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Old 04-09-2010, 01:30 PM   #10
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S2 in NA cars in 95
S2 in SC cars in 96
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