Truck is losing power and shaking between 15-50 mph

When accelerating the truck runs ok from 0-15 then once it hits that mph it starts to shake and feel like I’m losing power and has trouble getting to 50+ mph. Then when I’m over the range it runs ok again. Same issues when I start to decelerate, once it’s in between 50-15mph the truck starts to shake. I can feel that the engine is struggling to climb in speed. It is a 2008 Taco with about 120k miles. Anyone have any suggestions on what it might be or if you’ve had similar problems please let me know. Thanks

 

A friend suggested the same thing. Gonna give it a try this afternoon.

 

Haven't had that issue in my Taco, but a former vehicle did almost the exact thing when one of the ignition coils went out. Are you throwing any codes?

 

This sounds pretty similar to what I was feeling when my torque converter took a dump. Under hard acceleration it felt like the truck was shaking/bouncing/hesitating, then it would go away as I gained speed.

Just something to check. Pricey repair if you can’t do it yourself.

 

No codes at all.