The thing is I just had the pump retimed and the idle turned up 2 months ago. And when the idle was turned up, It really pulled agianst the break at stoplights. If I put it in drive, and just let it coast I could coast up a small incline and probably get up to 10mph without touching the gas on a streight level ground.

When going say 50mph or so, and stomp on it, rpms, and boost go up, truck goes no where faster.

my truck will shift into OD without me helping it. probably does 40ish all by itself. i have a very low stall converter though. and if your making boost and going nowhere your tranny is hurt. it doesnt explain the smoke though. do you have a trans temp gauge? put a gauge on it and run it hard see what your temps get up to. its probably slipping like mad.

Just noticed because we have a bout of warm weather I also have white smoke mixed with "coal" when heavy accelerating or revving, for about 5 mins after start up and it doesn't smell like normal burnt diesel. It looks like it thins out when the truck is warmed up, but it's still a little there. Could this be injectors? Pump?

Timing ... :humm:

I just had a shop retime it and set the idle up. Right after that it was quicker off the line, but pulled against the brakes bad. It seems like it has slipped again. Is that possible? An why?

Here is another video. Hard to hear, but it stutters a bit around 1100 when revved. Coming back down on rpms, you can here it. Listen closely. This is after 10 mins of idling in 37 degree weather. Almost like a miss. Also bad vibration at idle only in gear, and a jingle sound coming from under truck.

Did you find the problem?
 

I'm curious if you found the problem. I have a similar issue and would like to hear the outcome.

Thanks