slight acceleration judder

  1. WrenchinBrit

    Pulsing hesitant shuddering with slight acceleration

    Hey Guys 256k King Ranch HD tow 5.4 EL 2014 I'm getting a pulsing shudder if i feather the throttle to accelerate a little .. if i push harder it will downshift ok and run smooth .. I'm thinking injector? coil pack but fear trans issue ( have changed trans fluid and installed drain plug in pan...
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