ok new to your group here, have a 93 chevy k2500 extend cab flatbed 4wd, witha 6.5 turbo diesel, with auto tranny, two years ago new ip and new injectors, new pmd 2 months ago, about trucks sits a week or two between use, and alot of jobs require me to drive acroos lawns and trucks kills the grass due to wieght, truck started acting up about 3 months ago, its always been cold natured, but now i can start it and drive it all day long, aslong as i dont shut it down, full power, lots of torque, but when you shut it down even afte just a couple of minutes it idles real ruff, and when you step on the pedal, it only goes up 100, a couple of rpm and thats it, shut it off and wait about an hour and it runs great again, now i have run it 7 hours with no problems as long as i dont shut it off. any help would be great

 

welcome to the forum
sorry i cannot help much due to not doing a ton with the computer systems on the 6.5
but someone should be along

 

Truck cannot be a 1993 if you have a pmd as 1993 was the last year with mechanical injection check tag inside the driver door and report back.

 

yes your right, sorry, it is a 94

 

Check for trouble codes and report the code #'s back here.

Google "paper clip code checking".