When transmission shifts to third it acts like it is in neutral

200,000 MILES • 5.8L • V8 • 4WD • AUTOMATIC
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IFUWOODJUSTFIXIT4ME
  • MEMBER
  • 2 POSTS
Shift from first to second okay. fluid is full. When speed decreases enough goes back into second.
Aug 17, 2019 at 4:56 PM
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PATENTED_REPAIR_PRO
  • ✓Experienced Mechanic
  • 1,853 POSTS
Drop the transmission pan and see if there is a lot of debris in the pan, if so it had to come off something and fallen down there, most likely a clutch disc has burned up.
If there is no debris, have the transmission rebuilt or install a new or re-manufactured one even a salvage one.
There is obviously something wrong within the transmission.
Aug 17, 2019 at 7:49 PM
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