Been a while sence i have posted thought my overheating problems were gone but today i was letting the jeep idle and next thing i knew it was overheating so i thought but my temp was still low could my pressure bottle that i found not seated down and now not sealing be the problem or possibly somthing else im at a loss

 

im still at a loss its a new bottle any ideas on what it might be

 

are you saying that your temp gauge showed low temp but the engine was actualy over heating? If so You want to change your temp sender and check your fan. Change the temp sender first. See if it was over heating to reporting the temp to the Computer to turn on the fan.