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Re: Mercury Sable with a pesky P0401 EGR insufficient flow code
Posted to Technical Tips Forum on 10/24/2023 4 Replies

Hi Craig,

The early 4.6 used in the vans a trucks had a similar design. The EGR ports would plug up and the EGR exhaust gasses would flood any of the ports that were still open. Login to read more.

4 Replies Received (View Replies)