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Re: 2002 chevy van with 5.7L. both banks lean
Posted to Technical Discussion Forum on 11/11/2012 48 Replies

I might have missed it but I would like to see freeze frame data. Lean codes set at idle are almost always vacuum leaks, set at speed, maf or fuel delivery. Disconnecting maf and going wot and watching o2 will determine if fuel delivery. The fact that he chang... Login to read more.

48 Replies Received (View Replies)