Hi I've got a 2000 DJ with a 4.0 I purchased and has some issues. It's been sitting about 4-5 years. I know ...I know. Lol. So I get a cam sensor code so I replace the cam sensor but still idles rough after 1-1.5 min of running. Has a new crank sensor also. Does this sound like a fuel prob? It has good throttle response and skip goes away with any increase in throttle. Any guesses on where the issue might lie?