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International Automotive Technicians Network
Re: O2 voltage change during heater operation
Posted to Technical Discussion Forum on 6/4/1998

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Let's take a look, John. Here's a 1997 5.7 C truck that sat overnight. It's 8:30 A.M. so the ambient temp is only 80 degrees. Look at the images at the end of the 2 minute key cycle.

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