When I lay the truck to the floor or give it a little to much gas it bogs down and fells like it is going to quit but jumps back up and takes off any help it has the 5.9

 

Sounds TPS related .

 

Have you read the plenum stickey and what rims? Please add your vehicle info in your signature.

 

Already changed the tps any other suggestions

 

Plenum gasket was changed as well

 

My old 96 5.9 did this right before the cat was so clogged it wouldn't let the truck run, could however be multiple other things.

 

Have you removed the front O2 sensor to see if that helps?

 

No cats but didn't run this way before we rebuilt the motor new distributor crank position sensor we got it in sync with the scan tool running out of ideas it does it good when your at a red light sitting and go to take off

 

Fuel pump ever replaced ? Confirm pressure and do a flow test next IMO

 

Just replaced last month