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Re: 2002 Yukon XL P0174, P0171
Posted to Technical Discussion Forum on 1/26/2006 3 Replies

Hi Rags,

I see a lean condition only at idle (nevermind any flex fuel PIDs then) and IAC counts that seem low, but not all of the way down. What concerns me is the difference in Idle RPM and desired RPM in the FR. I would be keeping that in the back of my mi... Login to read more.

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