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International Automotive Technicians Network
Re: Using oxygen sensors to diagnose intermittent stall
Posted to Technical Theory Forum on 1/10/2021

So it was mentioned to me that the rear O2's go full rich so there must be fuel there. That is absolutely possible but that would mean the 2 front sensors are reporting full lean incorrectly. This got me thinking a little harder about this.

The front sensors... Login to read more.