My temp gauge normally runs about mid scale. Last week it started moving up to about 2/3 towards hot, but it'll stay there for a while then drop back to normal. It'll repeat this during a 2 hour mowing. I've changed the coolant every year, new radiator cap last year. Mower is 14 yrs old with 2200 hrs. Radiator is clean and belt is tight. Upper hose is firm when running, so it's making pressure. I checked the engine temp while running at the temp sender with a IR gun and also near a couple freeze plugs and it's running 180 degrees. I'd suspect the sending unit as opposed to the temp gauge. Temp doesn't change even after running a couple hours(with IR gun check)
Thoughts?
Thoughts?
