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Power surge

814 Views 1 Reply 2 Participants Last post by  octaneman
Hi, I have a 98 Chevy k1500 with the 5.7l one I'm in over drive I get one pulse and it won't happen again unless it comes out of over drive then goes back in. The check engine light is on for a heated element in the 02 sensor and low catalyst efficiency bank 1. Any thoughts?
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