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Re: More P0171/174 fun: '03 Expedition 4.6L
Posted to Technical Theory Forum on 5/23/2007

Hi Rusty,

Interesting points...I hadn't thought of it in that way.

I'm sure I would have seen a reaction from the pump during a throttle snap, that would have made a neat capture.

The main thing I used in my thought process was what I DIDN'T seen in the ... Login to read more.