Jeep Wrangler Issue


#1

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?


#2

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.


#3

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.