Any time your foot is so much as two or three millimeters into the accelerator, the electronic idle system is *completely* no longer applicable. If it's stumbling at idle, that's possible. But if it idles normally and then only hesitates upon acceleration, once the rpms are up above the idle, no matter how small an amount, the electronic idler has no more control over... anything. At least as far as I know.

well with that in mind if one of those wires in the harness it grounding or shorting out perhaps its getting the wrong message and tries to momentarily compensate?
The ONLY thing I can see that was different after the oil change was the exposed wires being soaked in oil, so I guess I need to do something about that and then cross that off my list.

Have you checked the vacuum lines going to/from the ALDA and turbo? If they knocked one of these loose it would disable the turbo and the engine would seem different when you tried to accelerate/at lower RPMs.

You have to settle down
 

You are jumping or grasping for straws. Number one, no "new" oil will ever make a difference to the way it runs. It can make a difference to the way it starts and to long term engine wear, but not to any lack of power. It can't do that. Really the only thing that can do what you describe is a lack of fuel. Restricted screen, bent line, plugged filters, cracked line or a slightly open line will do that on a diesel. Nothing in the electrical system or vacuum will do it either.

Its just ironic that its behaving this way right after the oil change. I JUST MET A great local GUY who does diesel fleet service and is not intimidated by any of my collection!
He's got the jeep now and will get the SDL next and I was wanting an injector, glow plug, t-stat service anyway now that were living in a cold climate its become imperative to do these things if i want it to be reliable at 20 degrees!

I will repost his findings when I get them.

If they used a point contact type of hoist to drain the oil. Check to see if a fuel line was flattened or kinked. They may have put wooden blocking on a lift arm for example.

Coincidence can occur but in your case it is not particlarily likely. Especially if the car was running well right up till the garage did the oil change but never has been right after.

If your new mechanic finds it was something they did make sure to pass his bill along to them. From a few of my paid for service jobs while travelling there are some real problems out there. By the same token there are some good shops out there as well.

Any way they could have rejiggered the EGR to be always on? That'd starve the engine for Oxygen while not starving it for "air", which would make low RPM running rough (that's why they disengage at low RPMs) and possibly cause an apparent over-fuel situation like it sounds you are having.

OK...THE EGR was the fix...WHOOHOO!
I am pretty sure I disconnected it years ago as that's always the 1st on my list when I buy a new toy. I guess someone thought they were saving the planet by hooking it back up and it IS near the filler cap so there's the adjacency thing in play.
THANK YOU THANK YOU THANK YOU!