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Re: Mercury Sable with a pesky P0401 EGR insufficient flow code
Posted to Technical Tips Forum on 10/24/2023 3 Replies

Hi Craig,

On most Fords of this era the PCM constantly monitored the EGR command in relation the engine load demand along with most of the other engine sensors and tranny range sensor. All of these sensor inputs would affect the transmission shift points on ... Login to read more.

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