Trans comes outta gear!!!
Did you try lowering the line pressure back down to see if it goes away?
If also 1st and 2nd, does it jump out with the shifter in [D1] or [D2].
Does it jump out of 3rd gear in [D3]?
We had a similar thread where it turned out the forward sprag had broken and would hold for partial throttle, but not full throttle. In [D1] and [D2] and for just 3rd gear in [D3], the overrun clutch is engaged and removes some load from the forward sprag; hence I asked the questions above.






