Truck gets squirrelly when it rains or is wet outside,wants to die after driving

New distributer cap fixed it, however I could not get the old rotor off to put the new one on, is it rusted on? The old cap had white crystals approx. 1/2" long hanging from each contact and the alum. base was oxidized heavily. Any tips on getting the old rotor off or leave well enough alone?

I've had to break them off a number of times. Just grab the rotor with small channel-locks or big pliers and give it a twist. The rotor has a tab that engages in an angled slot in the top of the distributor shaft to hold its alignment. Once that breaks off of the rotor, the rotor will turn and then slide up off the shaft and that tab will comes right out of the shaft. This is one of those times you'll be worried about hurting something because you have to use more force than you like to, but the rotor will really come off pretty easy, its just too strong to do by hand.

Yep i agree, they give some problems, so much so that is almost needed in a good tune up on these vehicles! Something about the drain or vent in the bottom of the old ones thst gave some moisture problems, can't remember. (New dist. not a reman. OldTruckman.)

You know we must have gone to the same school, LOL

At least a couple of the same classes in that OLD SCHOOL! It still works though, cant get away from the basics! I dont care if they put 25 computers on them.

Yes, it is a 94 chevy 1500 2WD, 4.3 V6, has 230000 miles, I'm 3rd owner and have had it the longest, so the whole distributer should be replaced and not just an ignition coil or the cap, that's the kind of logical answer I was looking for, because I have had it towed to a garage twice and it cures itself, but they find other things that need fixing. A lot of the older mechanics around here are gone now. Thanks for the help.