Jeep Tj Normal Operating Temp. Re: Normal Operating Temp Changed out the thermostat and put in new Hout coolant as recommended for use on Jeeps/Chrysler vehicles. The new Jeep I am buying has the tow package and thus extra cooling.
You may wanna take it to the dealer and get it checked. Jeep Forums: Replies: Last Post: Normal temperature: Neil F. It seems you may have a thermostat that is stuck open.
When sitting idle, the temp rises close to operating temp but not quite.
Changed thermostat twice, so it's not that.
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This is a common problem for all Jeep Renegades. Coolant thermostat temperature below regulating temperature. When i did a body lift, it seemed to start running hotter--i also did a engine mount lift.