I just had to redo my track bar the bracket gave so there was some pretty violent shaking but since the replacement I havnt had an issue

 

It's really odd for a transmission to go without giving any heads up. Do you have a scanner can that read live data?

 

I unfortunately do not although I intend to have a shop look and run some tests once recovery is done. had to try here first and see if anyone knew what was up

 

45mph is when the torque converter locks up so it could be that but it's unlikely. Without the ability to read live data there is nothing I can do for you. Hopefully the shop will figure it out for you!

 

update I had a buddy ride with me and he made a few points to add #1 it has absolutely no rhythm or pattern to it #2 the engine is going into an idle when I'm still pressing the accelerator and I get two pops in close sucesion immediately before I get power back #3 when I stop and park for a bit the problem disappears for a few minutes #4 when it is occurring it will take power when I go from a stop.

 

Keep a close look at your engine codes. They might yield additional clues. Make friends with the people at a place that'll read your codes for free -- bring them fresh brownies donuts and coffee. It sounds like an intermittent electrical issue for fuel or ignition similar to something I'm dealing with myself but my truck just stopped having the problem for two days straight.

 

so I went and did some internet and friend poking around and got a couple of answers I followed on lead and removed my EVAP canister. upon instpection I had charcoal 2 inches up the line... think I found my culprit