Recent content by MajorMedic44

  1. M

    Whistle affected by throttle! Help!!

    Sorry meant crank case
  2. M

    Whistle affected by throttle! Help!!

    2002 TJ. 4.0 After running about 10 minutes, a whistle appears. It disappears when I’m on throttle. When I let off something whistles loud. I’ve changed throttle body, crankcase valves, brake booster valve and all vacuum lines. I’ve also made sure my intake manifold bolts were tight. Any ideas...