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International Automotive Technicians Network
Re: Using oxygen sensors to diagnose intermittent stall
Posted to Technical Theory Forum on 1/9/2021

Looking at figure #3 it appears that the rear O2 sensor voltages go rich while the fronts go lean when the near stall occurs. Feels like an ignition issue to me. It looks like the ignition issue is causing unburnt fuel to enter the converters during the near s... Login to read more.