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Weird sounds thrown at mid- and high-torque situations

Discussion in '3rd Gen - 2007 - 2017' started by Keaton Taylor, Nov 23, 2020.

  1. Keaton Taylor

    Keaton Taylor Member

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    So I recently took my Expy in and got a tune up and had my entire front 4wd setup replaced because I was getting the grinding sound associated with the actuator problem described here pretty often.

    I thought that would fix my issues but after getting my truck back we’re still getting a low rumble with a sort of sucking sound like air is being lost or something when going uphill, accelerating on the highway, or towing a small trailer.

    for context I’ve already had one turbo replaced because of wastegate issues.
     
  2. Michael McC

    Michael McC Full Access Members

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    Mine has a broken exhaust manifold stud which causes a leak. Not a low pitch. More of a reed sound, like high speed crickets. Happens when accelerating hard but not just revving the motor. Known issue with warping exhaust manifolds. I am getting aftermarket replacements. Not sure if this is what you have or not.
     
    Keaton Taylor likes this.

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