shortee1fourtee Posted November 2, 2022 Share Posted November 2, 2022 Sorry, I know everyone is got to be getting tired of me asking for help. Lol I drove all summer without a thermostat because it was like that when I got the truck. But winter is coming, so i bought and installed a thermostat. Couple miles down the road i noticed It was beginning to run hot. So being i was on the side of the road, i just removed it for now and proceeded to head home. But now its running hot without the thermostat????? What happened???? Link to comment Share on other sites More sharing options...
eaglescout526 Posted November 2, 2022 Share Posted November 2, 2022 Did you flush everything? These Jeeps can be very finicky if one little section of the cooling system isn’t up to spec. Link to comment Share on other sites More sharing options...
Pete M Posted November 3, 2022 Share Posted November 3, 2022 burping can be tricky on the old Jeeps. the temp sensor for the gauges is at the back/top of the head in a 4.0 and so a bubble there can make it look like it's overheating without actually overheating. point the truck downhill and try to bleed air out that very sensor by unscrewing it. do NOT do that when the coolant is hot, but it may be beneficial to fire up the engine once you've loosened the sensor. have a second person on hand to quickly kill the engine if anything goes wrong. is the thermostat a 195* mopar unit? Link to comment Share on other sites More sharing options...
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