# Jeep Thermostat Question

**URL:** <https://community.cartalk.com/t/jeep-thermostat-question/29706>\
**Category:** Maintenance/Repairs\
**Tags:** wrangler, coolant, jeep, radiators\
**Created:** [April 27, 2009, 6:33pm UTC](https://community.cartalk.com/t/jeep-thermostat-question/29706 "2009-04-27T18:33:06Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![ksholler](https://avatars.discourse-cdn.com/v4/letter/k/aca169/32.png) [@ksholler](https://community.cartalk.com/u/ksholler)\
**Post date:** [April 27, 2009, 6:33pm UTC](https://community.cartalk.com/t/jeep-thermostat-question/29706/1 "2009-04-27T18:33:06Z")

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I have a 2000 Jeep Wrangler whose coolant tank started leaking in 2006. It was patched and I had no problems until 2007 when a faulty thermostat caused my radiator to blow. The thermostat, radiator and hoses were all replaced. In 2008, I noticed a burnt coolant smell and had the system flushed. This past weekend, I drove for about 20 minutes with the A/C on full. When I turned off the car, steam started coming from under the hood and coolant started pouring from underneath the car. The next day, I drained the coolant and ran it with water for a long time, and it would not overheat. There were no loose or cracked hoses, but there was thick, rust-colored buildup underneath the radiator cap. I then refilled it with coolant and drove for about 20 minutes, and when I turned it off could hear the coolant bubbling for about 5 minutes, but nothing overflowed. Any ideas?