Weird Truck Behavior

[Meccanoble]

Just confirmed there is definitely a leak. Installed my DJM sway bars this weekend and due to angle of car on ramps, you can see orange water slowly dripping on bar. I think its the T fitting according to video, the one with the metal bar. Will work on getting that replaced, just searching for instructions.

 

[Meccanoble]

I got an afm delete tune but still have same issues. I'm thinking either plugs or something with throttle.

 

[Meccanoble]

I just wanted to explain the truck behavior one more time to make sure I'm pursuing the right way to fix.

Only while in motion around 1300 - 2000 rpm (depending on gear and speed), with light throttle, the truck makes a vibration, and extremely difficult to increase speed. The vibration and motion of odometer is similar to a governor. The rpm's bounce back and forth roughly 100 rpms and the longer you keep this low pressure on the gas without letting go or dramatically increasing the throttle, the vibration becomes worst. This does not occur any other time while driving. No CEL.

So far, I did the following to fix:

1) clean throttle
2) clean MAF
3) change spark plugs (confirmed current plugs were good)
4) deleted AFM through tune

 

[swathdiver]

I wonder if it's your torque converter? Only does this in gear and under load and not in park? I would also venture a guess that it's an internal engine problem like the VVT or timing chain but not sufficiently familiar with these engines yet to know for sure.

 

[Meccanoble]

I wonder if it's your torque converter? Only does this in gear and under load and not in park? I would also venture a guess that it's an internal engine problem like the VVT or timing chain but not sufficiently familiar with these engines yet to know for sure.

It does it only under very light load, pretty much the lighest load you can put. If you put any descent throttle or floor it, no issues but when you are trying to cruise and put enough gas so you not slowing down, it does this. I tried in manual mode and it still happens. That may eliminate the VVT, torque converter and chain as issues since its not consistent no matter how much throttle is given?

Since its determined by how open the throttle is, I'm leaning towards something associated with idle control valve but I really have no idea.