# Jeep Wrangler Issue

**URL:** <https://community.cartalk.com/t/jeep-wrangler-issue/91639>\
**Category:** Maintenance/Repairs\
**Created:** [November 5, 2015, 6:22pm UTC](https://community.cartalk.com/t/jeep-wrangler-issue/91639 "2015-11-05T18:22:30Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![STROK](https://avatars.discourse-cdn.com/v4/letter/s/a88e4f/32.png) [@STROK](https://community.cartalk.com/u/STROK)\
**Post date:** [November 5, 2015, 6:22pm UTC](https://community.cartalk.com/t/jeep-wrangler-issue/91639/1 "2015-11-05T18:22:30Z")

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After a clean flush and fill of the radiator and new thermostat this problem still exists on my 2013 Jeep Wrangler:  
While going up hill ONLY, the temperature will go from about 50% (normal) to about 60-70% then once the vehicle returns to flat road it will go back to the 50% line on the temperature gauge. The Jeep has about 30,000 miles and it just started to do this within the last 250 miles. Thoughts?

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**Author:** ![circuitsmith](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/circuitsmith/32/40376_2.png) [@circuitsmith](https://community.cartalk.com/u/circuitsmith)\
**Post date:** [November 5, 2015, 7:40pm UTC](https://community.cartalk.com/t/jeep-wrangler-issue/91639/2 "2015-11-05T19:40:53Z")

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Could be the early stages of head gasket failure.  
DIY check: remove radiator cap (when cold!), start engine and watch for bubbles as the engine warms up.  
Of course a mechanic can do more sophisticated tests.

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**Author:** ![Docnick](https://avatars.discourse-cdn.com/v4/letter/d/ecae2f/32.png) [@Docnick](https://community.cartalk.com/u/Docnick)\
**Post date:** [November 5, 2015, 7:43pm UTC](https://community.cartalk.com/t/jeep-wrangler-issue/91639/3 "2015-11-05T19:43:22Z")

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Your radiator may still be partially clogged or impede flow somehow. Have you checked out the cooling fan as well?

Clearly the cooling system is not doing its job. A good mechanic can quickly determine where the exact problem lies.

Have you ruled out a small head gasket leak? That would put hot gasses into the cooling system and raise the temperature.