I hate to start off with a problem that have. But this problem has been driving me crazy. The truck starts fine but then 1 min. later it starts skipping and back firing, then when it's gotten up to temp it's gone. I have replaced the distributor cap and rotor, coil pack, wires and plugs. The problem has not gone away. If any one has any feed back about this i would greatly appreciate it. Oh yea I have a 2002 Dakota with a 3.9L V6.