Erratic temp

Atlas

New member
My 96 xj is doing something different

I replaced all these parts 2 1/2 yrs ago

Radiator 2x
Stat to a 185
Water pump

Everything works great. Good heat and everything. It's my girlfriends jeep so I don't get to drive it much.

Yesterday I noticed erratic temp gauge movement.

Has a slow rise to what I would imagine 185 or 190 and comes down but then goes back up and down. It's not fast it's over a 5 minute period.

Ideas? New stat perhaps? Is it normal due to it being 20 degrees out and the radiator is constantly cooling causing the computer to want warmth?

Thx!
 

My guess is the thermostat. Sounds like it's starting to stick a little.
 
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