when i start my truck in the morning, the truck spits and sputters for 30 min, when it warms up it runs fine, was worse then i changed the EGR valve. could it be the water temp sensor for the computer?? the gauge comes up just ove the C marker!! any ideas??

 

Yours has two temp sensors. One for the PCM, one for the gauge in the dash. They are both on the coolant passage at the front of the intake manifold, one on each side of the thermostat housing. One on the passenger side if for the gauge. Have a look at the other one, see what it looks like.