what would cause my 2001 tribute es to start sputtering when i get to 55 mph?
Sounds like a misfire, scan the vehicle for the code, that will let us know what the real issues is. Post back.
Did you ever have the fuel filter changed? On a fuel injected engine, if ithe filter is restricted and pressure is low it will cause those symptoms.
how do i scan the vehicle for the code?
you can go to an auto parts store like O Reilly's, advance auto part's and they should be able to do it for you
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