96 zr2 4.3 sputtering acceleration and kicks a little on highway.

About a year ago my truck sputtered and broke down with check engine light flashing. I replace fuel filter, pump, cleaned out gas tank, new plugs and wires. Got it running good. But check engine light was still on. I think the code was p0340 (cylinder 1 misfire, still has same code today). I drove it as is for 6 months like that, never had a problem except with accelerating it would ACT like it wants to die but never would, i would describe it as hesitating but i just let off gas and mash it again and varoom it takes off. When i would get on the highway at 70mph, it would surge/kick/miss really fast and not do it every again, or do it every 5 miles or so. This problem is a hit and miss, its not consistant. I changed my camshaft posistion sensor yesterday and nothing. I looked at my cap and rotor, the cap had yellow crystals on the contacts and what looked to be where it has melted(for lack of a better word) on one sideof the contacts. And the rotor contact looked burned and melted( its not melted DOWN more of expanded i would say). But before it broke down i never had a problem. Also this last winter it got down to about 20* or so and i went to reverse and she died. The check engine light went off for the first time ever(started right back up) and didn't come back on for a few days. I have the CSFI injectors. I have read i need to replace with MFI and problem solved? No vacuum leaks, no gas leaks, everything looks and sounds great. Just the mystery mentioned. Also i have the horizontal dis. numbered 2, 4, 6, c on pasanger side and 3, 1, 5 on driver side. I have it wired as read on passanger, and 1 being at the front of motor running to 1 marked on dis. and 3 being middle cylinder going to 3 marked on dis. Is the firing order correct? Any input on this would be greatly apperciated. Im about to just bash my head in on this. I have worked on this problem for a year, talked to a ton of people, looked all over the net. Ran tests, replaced parts. And i still have the proplem. Just about every sensor i can imagine has been replaced. The cap and rotor looked new other than what i mentioned. I checked the TDC when i pulled the cam sensor and it was right on. So if you have any questions, ask away. If i missed anything let me know. Please help. THanks for your time, Josh

Ok i went back in some of my old notes and p0340 was for CPS bank 1 circuit malfunction, which i replaced the CPS. What else would cause that code other than a short in the wiring? I will check the wires tomorrow morning. Thanks again, i know this is a difficult problem to troubleshoot but any input helps.

Ok i also found this on AF website "P0340 - Camshaft Position Sensor A Circuit (Bank 1 or single sensor)"...

What do you mean check TDC? Did you get a scanner on there and check for camshaft/crankshaft sync? You could have a worn distributor gear. Did you replace the intake gaskets, or anything that required the removal of the distributor shaft?

Top dead center, Never removed intake or dis., me or prior owner. I haven't had a scanner on ther while running. Just at autozone to check codes. The only code it has ever gave me was p0340.

Well i guess i fixed it when i replaced the CPS. Today on the way to work, the check engine light went off, and no more kicks or sputtering. I disconected the battery while i changed the CPS, i figured that would have reset everything. Guess not. Im guessing after it ran a full cycle it reset. Not sure how it works exactly on this truck.