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International Automotive Technicians Network
Re: Mercury Sable with a pesky P0401 EGR insufficient flow code
Posted to Technical Tips Forum on 10/24/2023

Hi Craig,

The most popular one that I recall was the 4.6 in the Town Cars and Crown Vic's. They had the soft rubber "T" fitting that would always collapse and suck a hole in them and the EGR passages would be clogged up with lots of baked carbon.

They were... Login to read more.