kansas240

Truck is running fine, except for when I try to accelerate quickly, it stumbles in all gears.
If I short shift, I can get up to 80mph with no trouble, idles smooth.
No codes are being thrown and the MAS seems to be fine ( I plug the little hole and the truck dies)
I can run the a/c and idle fine. It started doing this while I was on a long trip, then the trans fried. It even melted 5th gear to the shaft and killed the speed sensor! somehow it sucked a gallon of water in the day after I got new tires and an alignment.

I replaced the trans, and it was working fine last night. Now it has come back again.

What would cause it to die? is there a secondary timing profile? it revs freely in neutral, only under load does it die, and always after part throttle. fine around town.

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