Suddenly shift into neutral when drving?

[AlanM]

Originally Posted by oldgun

Removed the TCM and cleaned seninods, changed fluid again.

REmained same prob.

Then I removed cooler and flushed coolant, looks like it never been changed before.also oil cooler is half blocked, removed filter housing and two pipes, cleaned and blowed dry.

Then I can feel the oil flowing inside the pipes.

Took it for 40 minutes spin, no prob whatever.

It shifts gears very quickly.

It's the oil cooler blocked!!!

Good job fixing it! Did you find what was blocking the cooler?