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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 06-19-2004, 04:14 PM   #1
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I have a 93 SSEI and am getting code 43 on scanner, spark control module failure. Does any one know where this is located on this year Bonneville and does the knock sensor ever fail ?I replaced the computer cause the manual suggested that when this code is set the epprom is bad. No such luck. Any advice or dirction would be appreciated
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Old 06-19-2004, 07:34 PM   #2
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That code means the knock sensor is disconnected or bad, not the ECM.
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Old 06-27-2004, 09:48 PM   #3
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you know I couldnt find that knock sensor to save my life
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Old 06-27-2004, 09:53 PM   #4
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Old 06-28-2004, 11:47 PM   #5
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Looks like it'* mounted in the engine block, below the valve covers (not under them), mounted in the engine block cooling passage, under a heat shield, which is mounted with two screws.

You may want to peek in a service manual at the auto store.
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Old 06-29-2004, 12:36 PM   #6
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If the knock sensor is in the same place as my '92, it'* a bitch to get at. It'* located at the right rear of the block, up high close to the valve cover. It'* above the oil pressure sending unit. One way to know which one is that it has only a single wire running to it.

If you take off the right front wheel and remove the floppy shield, you can see it, but to get it out it'* best to go from underneath.

I have seen and read a lot about the threads being dirty, and even the manual says that the threads should not have anything on them, but my new one came with a sealant already on the threads, and I found that the sensor plugs up an oil passage. So I guess the theory is that even with a sealant you will get an electrical connection to the block.
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Old 06-29-2004, 02:59 PM   #7
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You can see it in this pic. It'* about 1.5" round, on the left, to the left of the coolant passage that looks green, and has one wire. It'* peeking out around the corner of the block. My new one had sealant on the threads, too. I left it there.
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Old 06-30-2004, 06:50 PM   #8
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I have a manual but not much help with the location as this manual covers bonneville ,eighty eight and lesabre. thanks for the quick response I will let you know what I find. Looks like its really buried
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