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International Automotive Technicians Network
Re: P0171 at idle and off idle
Posted to Technical Discussion Forum on 3/19/2014

hey John

I had him put 93 octane in the fuel tank, he brought it in today, ltft was at 14 percent. its improved a little.

I am going to catch up on some vehicles I have here, then I will get back to that one.

Robert Login to read more.