truck doesnt like wot from a stop

OK today I just had to change out my rear main seal 3.4 prerunner auto. It jumped out of drive and into neutral when I floored it from a dead stop. It has done it once or twice before in the mud but never before on pavement. The next time I floored it it made four banging noises with hard shakes but then went rather than the usual breaking loose of tires any thaughts.and yes everything is tight and put back exactly as it was before.

 

You check the fluid level

 

Axle wrap?

 

Fluid is good and how would axle wrap make it poo into neutral rather than spin

 

OK I checked all the mounts before reinstallation granny seemed alittle to easily flexed but no rips and do not have a body lift only a spacer in front and rear.and this truck has towed the doors off of hell its whole life.


It will also pop out if turning and hit a big bump like pulling onto a paved road from dirt and its just shy of 350000

 

no fluid was black when i got the truck from my dad and had never been changed at a little over 290,xxx so i changed it and the filter everything since then the fluid is still red and smells normal

 

Goddamn. Thats a resiliant trans. I wonder if it the oil was ever changed in that first 290k miles? If not its amazing its still going. Did you get it flushed or drained? Is this a manual or an auto? Sorry not 100% sure what a main seal is

 

Did it again today under normal acceleration crossing a highway with a hump

 

Bump for help. What keeps the tranny in drive?

 

Sounds like what other have said before: shifter linkage.

 

Is there a specific adjustment I just put the bolt back where it was is there a how to for adjustment