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International Automotive Technicians Network
Re: No spark on 1 and 5
Posted to Technical Discussion Forum on 12/5/2024

I believe during cranking, the PCM gang fires all 3 coils at the same time. This continues until 200 rpm, at which time the PCM figures out where the #1 cylinder is. So, either the PCM is bad or the tone wheel at the crank is bad. Wiring and coils are good. Login to read more.