code 43. - 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 09-26-2010, 10:57 PM   #1
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whats goin on there?any input ?
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Old 09-26-2010, 11:01 PM   #2
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43 knock sensor
or electronic spark control circuit fault
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Old 09-26-2010, 11:06 PM   #3
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yes i would say electronic spark control. its trippin hard while on heavy accelaration.like missin u know. i remember my 79 silverado did this when it wanted new plugs. the plugs on the bonnie look fine.barley 2000 miles on them.what steps do u suggest i take to fix this immediately? my trip into the colorado mountains (vail) to shotcrete a pool was really annoying with it stuttering up mountain passes.please tell me what to do to make it better.thanks.
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Old 09-26-2010, 11:11 PM   #4
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Sputtering under load kind of leads me to think weak coils. Checking plugs first is a good idea, a new set is cheap. If the plug wires are old, then I say replace them as well.
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Old 09-26-2010, 11:15 PM   #5
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but it will clear out as well. comes and goes.
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Old 09-26-2010, 11:18 PM   #6
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If a weak spark, it will drive fine, but sputter under load.
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Old 09-26-2010, 11:24 PM   #7
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i should test my coils first?
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Old 09-26-2010, 11:29 PM   #8
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Ya, I would.
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Old 09-26-2010, 11:31 PM   #9
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cool.will get back 2 u.
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Old 10-02-2010, 10:33 PM   #10
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yep. u were right.one of the three was give n a zero reading.replaced that shes runin strong again!
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