wrangler Jeep 4.0, my 94 wrangler is overheating and has an entire new cooling system. it now is idling rough and stalls out. whats wrong? replaced the entire cooling system. was fine for a month now it overheats again and idles rough and dies
This is a classic sign of a blown head gasket. To confirm this, have a compression test done. All cylinders should be within 20 psi of each other. If not, you have a blown head gasket. Have the head check for cracks once removed to be on the safe side.