When I am driving down the road my diesel 6.5 acts like it wants to die and I let off the gas - it seems to recover, but when I stop at a light it dies, but restarts. What do I need to look at to troubleshoot??? Simple things first please.http://www.dieselplace.com/forum/smileys/Confused.gif

fuel filter?

If it is not the fuel filter? What would I check next???

sounds like a possible FSD