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Re: Mercury Sable with a pesky P0401 EGR insufficient flow code
Posted to Technical Tips Forum on 10/24/2023 7 Replies

Hi Eugene,

I know you see a lot of these older vehicles still around down here in Texas and it's over 20 years old, but many vehicles like this are abundant here and have EGR systems.

Many folks never understood the need for an EGR system, so they simply b... Login to read more.

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