Hey guys,
I have searched this website and the web itself for the issue I am having but haven't really found anything.
Last night while driving home(09 Journey Sedan RWD) my transmission started upshifting and downshifting at odd times and at one point felt like a harsh bump during a downshift. Also the car did not want to accelerate in any gear at 2 1/4 RPM's or higher. It stalled at a stop sign and I had to use manual mode to ensure I would upshift before 2 1/4 RPM's. Conditions were 5 degrees outside and I had just under a quarter tank of gas.

I know this transmission can have harsh downshifts once in awhile but I never experienced this situation before. Bought the car new and it has 67k miles on it.

Any thoughts?

Thanks in advance!

 

First guess and or questions is have you done your 60k service, includes changin the trans fluid. And second is and CELs?

 

I thought the 7S A/T fluid is life time? I understand still servicing the fluid itself just to be comfortable with where the fluid stands. Although OP didn't say if it was the 7S A/T.