I had an old Dodge van that would run for 10-20 min then quit. Turned out that when the ballast resistor got hot(they get really hot!), it would go to open. Wait a half hour or pack snow on it and you were good for another 10min. Made for a VERY long drive to town in a snow storm!
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'89 XJ 4" lift, Warn Combo mount and 9.5ti!
31s, 4.10s and rear lockright!
That's enough(for now!)