2002 5.9L quitting

[02Dump]

Hi,

I have a 2002 Ram 3500 with the 5.9L. Lately when we start it up from a cold start it will stall out (whether driving or if we just let it sit and idle up to temp) and it used to actually start itself back up if we were driving, but lately it takes quite a few cranks to get it back running. After which it seems to run fine.

Engine only has 88k on it
Have done a full tune-up, plugs, wires, etc.
Ignition Switch & coil
Fuel Pump has good pressure and power
Does not throw codes when this happens
All lights come on when we turn the key off then back on to restart (computer is working)

Any ideas where I go/check from here? Is there common problems with this engine that I should know about that could be connected to my problem?

 

[RonJon '06]

Could be a dirty Idle Air Control valve, it's pretty easy and cheap to clean so it might be worth a try. The Plenum gasket is known to go bad on these motors but that usually causes increased oil consumption, decreased MPG and pinging under load. You might get a better answer in the 2nd Gen section since there are a lot more 5.9L guys over there. Welcome to RF.