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loss of power

  1. Hesitation- help pls!

    Titan General Discussion
    My 2007 that has 46000 miles on it occasionally gives a sensation of momentary loss of power. I have hammered it a couple of times since this has happened and it has run fine during aggressive acceleration. It seems to be worse when the vehicle is cold. Took it to the dealership today but it...
  2. Titan loss of power and missing over 3000 rpm

    Titan Problems & Dealer Service
    Please help, I just had my service engine light come on and ever since, I have noticed a pretty significant loss in power but mainly notice it at and over 3000 rpm. feels like it starts missing pretty bad. I went to Auto Zone today and they pulled a P0420 code. Catalist system efficiency below...