Coan 20320-2 used converter PROBLEMS

Discussion in 'The "Juice Box"' started by Gary Bohannon, Nov 10, 2019.

  1. Gary Bohannon

    Gary Bohannon Well-Known Member

    Just bought this converter and I'm a little worried.
    1. Noticed a slight whine on start up.
    2. Dropped into gear with a thud.
    3. Stalls hard at 1500 rpm.
    4. Wont shift up when driven. (or cant feel a shift)
    5. Free wheels (coasts) when I let off the throttle.
    I did some reading and seems I could have a bad converter sprag. Could also have a tranny full of metal and trash from a broken converter.
    Any ideas out there?
    Last edited: Nov 11, 2019
  2. Gary Bohannon

    Gary Bohannon Well-Known Member

    I called Coan.
    Tod said the above symptoms are more like a transmission problem.
    So how could a converter swap cause all this mess?
  3. LARRY70GS

    LARRY70GS a.k.a. "THE WIZARD"

    Swap it back out ASAP and see. Are you sure you set the converter end clearance correctly and that the converter was fully seated?
  4. Gary Bohannon

    Gary Bohannon Well-Known Member

    Need to recheck clearance. Had to use washers due to bolt pad overlaping balance weight on flexplate.

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