My 94 jeep cherokee quit on the interstate yesterday so I called a roll-back, but I got it started right after I called so I called back and cancelled. Then It quit again after a couple of miles, which was downtown. So I found a bar and stayed a couple hours to let the coil cool down. When I got back to the jeep It cranked and I drove it about 30 miles home with no problems. This morning I replaced the coil thinking it was fixed then it quit again and after a couple hours It fired right up and got me back home. What could be causing this, I am running out of Ideas. Thanks in advance!!!