Little info on the truck, 01 Dodge Ram, Cummins with approx 147K miles on it.

When it's cold out he starts the truck and it idles ok but if you attempt to raise the rpm at all it makes a horrible noise like a miss, blows crazy amounts of white smoke out the tail pipe. Holding it to the floor only gave 2200 RPM. Then it would drop down to about 1600RPM on it's own while still holding the go pedle to the floor. If you then let off the pedle and get back onto it it would raise rpm again and drop off. Seems weird for it to be hunting like that and not wanting to rev up.

They have tried fuel conditioner. Replaced the lift pump. Fuel filter is pretty new, been changed a few times. Picked the truck up down south and when they went to pick it up it was already running waiting for them.

Before the truck is totally warm you can be driving down the road when all of a sudden it loses speed/rpm. Turn the truck off, restart and you are good to go again for a bit of time. Some nights the truck will go out plow flawlessly others it's a PITA untill it's warm.

At work now but hopefully going to go try the key on and off 3 times thing to check for codes tomorrow. No engine light currently on though.

Thanks

 

The CEL won't come on with a 0216. I would bet that your VP 44 is on it's way south.

 

u gotta dead peddle.......0216..change the pump out now before it leaves u stranded.

 

Did you recently buy this truck? Or is this just a buddies?

 

Belongs to a company my buddy works for. He asked if I would take a look at it for them. Figured why not, always looking to learn or help out as he has helped me alot with a garage to work in.

 

Ok, went to do that key thing today. Only showed 2 codes.

P 0500
P 1693

The guy that was @ the shop said he had used the truck today. Let it warm up for a while before going on and it ran ok.

Thanks for assistance.

 

http://www.obd-codes.com/trouble_cod...alfunction.php