4 runner runs great up to 55MPH and over 55MPH, but skips and jumps at 55mph??? on 2001 Toyota 4Runner

transmission checked out fine
any ideas?

Asked by for the 2001 Toyota 4Runner
2 answers
possible torque convertor lock-up issues...
Can you give a different , more specific description? Are you talking about the engine or suspension and how much into throttle when occurs?