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Old 06-06-2025, 02:09 PM   #2
A1971Blazer
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Join Date: Nov 2013
Location: East Tennessee
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Re: LS Swappers - need some ideas on a P035x coil circuit error

Can't help you much on that engine but on my early (2002 LS1) I had some issues with misfiring. To determine if it was indeed getting fire to the plugs, I just used an inductive timing light on each plug wire to see if they were getting fire.
It turned out that my issue was simply a faulty connector to the coil pack harness.
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1970 Chevrolet K/5 Blazer
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