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A trouble code has been stored, have you had it scanned?
Driving without addressing this is causing more damage. I suspect with the current info its going to be a valve body issue.
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I do not do phone calls though can opt out and get you back on the waiting list yet again.
A valve body is a part inside the transaxle that changes, and directs the fluid flow from the pump, and solenoids, through valves to the vaious clutches and bands.
You need to try a better scan tool, with lights on there has to be codes.