This thread was helpful, thanks.
My 2006 TJ (4.0L) started to overheat a few weeks back. I checked the radiator and discovered the coolant was down at least a quart. Topping it off helped, but I was scratching my head. Where did the coolant go? Shortly thereafter, I started smelling it, and then the pump really started weeping.
Another thread (
https://wranglertjforum.com/threads/jeep-wrangler-tj-cooling-system-overhaul-faq.3397/) recommended replacing the thermostat with the pump, so I did, but the temperature has been pegged at 210 ever since. Previously, it would hover about halfway between the tick and 210, but it also jumped around a lot, which was unnerving when it hit 210. I thought that was too hot.
Based on what I've read here, I'm guessing the prior owner installed a lower temp version. It's good to know this (210) is normal.