I saw this post when searching and I seem to have same issue, did anyone have a solution(new to site, redirected me if needed, thanks!)
Kinda late on this one guys but i have the same issue. Just got the jeep out from winter, put a charger on it cause the battery was dead then she started right up. Went fine for about 20 min then it just quit. I tried to start it again but it would just crank and crank but wouldn't start. I waited about 20 more mins then she finally started again. Any ideas? I checked the coolant and it seemed almost gunky like mud had gotten in there. Any suggestions would be awesome thanks!!!