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No Lean Codes ?
Posted to Technical Theory Forum on 7/6/2010 7 Replies

Truck came in with a vacuum booster leaking into cab,so bad customer could hear it over normal road noises.I checked for DTC'S even though MIL was not on,and there were none. I would think that P0171 and P0174 would have been there with a leak that [...] gets ... Login to read more.

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car Vehicle Data

2004 Ford Expedition Eddie Bauer 4.6L

Engine4.6 L
Trans4-speed Automatic (Electronic)

car Vehicle Data

2004 Ford Expedition Eddie Bauer 4.6L

Engine4.6 L
Trans4-speed Automatic (Electronic)