I've got a 2001 XJ, and when I go to use my turn signal, either left or right, it'll stop working. It doesn't do it all the time or right way, some times I'll turn my blinker on and it'll flash twice and turn right off with the lever still up, sometimes it wind do it after a minute or so, sometime not even at all. What could the problem be?

Replace the switch?

Do your emergency flashers work properly? If so, swap the flasher relays with each other and see if that solves your problem.

flasher relay at the local auto parts store. relay is under the dash near the headlight switch