pops and cracks
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#5
Re: pops and cracks
DTC 42 on an 86 IROC is "Ignition Bypass Circuit Error". Appears this is a problem with spark timing, and could be related to the ignition control module. Not sure though.
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Aaront810
General 1967-2002 F-Body Tech
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08-29-2020 09:34 PM