I think its stuck open or does not have one. At the peak of summer I had 50% grill block and it was 105 out side. the needle only got to a little over half way in the temp gauge. Now it got colder and I got about 70% grill covered and the needle never really moves. It's acting like my old truck did when i removed the t-stat. also no need for testing the t-stat is on top and only take two bolts. so it a 5 min job at the most.
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