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Re: P0137 and P0157
"In addition, it would seem that in order for the O2 sensors to read lean it would need to be a substantial vacuum leak that you would be able to hear."
You'd think so but not always. The computer is just throwing the code to tell you there's a discrepancy between what it thinks the mix should be and what it is, it's not saying how much it's off by, could be a little could be alot. Without a data logger there's no telling.
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