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1992 Chevrolet Astro

Question: 1992 Chevy Astro Van TBI 4.3L LT sub model. Why is the o2 sensor getting hot?

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E.H.M2012, 4.3L V6, Tucson, AZ, January 21, 2012, 12:37
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The error code is O2 sensor. No, power to fuel pump. Engine cranks normal, but will not start.

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