I have a 2002 Ram 1500 ST Sport QuadCab, 5.9Liter automatic, 82000 miles. The motor tends to sputter & run rough when the gas is applied from a dead stop. After the truck reaches about 15mph, the motor runs normal. What started out as an occasional problem is now occurring on a regular basis. Engine starts fine, idles fine (fuel pressure is consistent at 49psi), and the oxy sensors have been replaced. All hoses & connections appear to be in proper condition. I am not getting any error codes activated or "check engine" light dispayed.

Any recommendations & suggestions would be appreciated. Thanks!

 

Try changing your plugs and wires.

 

Also could be a plenum leak. A common issue on the venerable old 360LA. Do a search in the 2nd Gen Ram section (they all have either the 318LA or 360LA) and it'll tell you how to check for it...

 

throttle positioning sensor.

 

clogged cat ??