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Re: Ford E350 2005 5.4L P0191 P0452
Posted to Technical Discussion Forum on 1/9/2013 1 Reply

Hi Robert

The van start but the works in a rich condition as a excessive fuel pressure, the O2 sensor are over 800mv and the fuel trim is -25% or more. I think if the PCM don't recognize fuel rail pressure PCM increase the pressure thru fuel pressure driver... Login to read more.

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