Cat-ilac, Cat protects their engines with a fuel injection pump deracking feature.Another words as raditior temp climbs beyond a preset point fuel injection rate is decreased.No,our coolant temp was only very slightly elevated,we were not running hot.If oil pressure drops slightly same thing happens.We ran into this symptom:ran great for a round or two or in the cool part of the day then once temp climbed,loss of power.We found our main raditor was partway plugged.We had to swing out All the other coolers to get to the main raditior.Cebis did not alert us in any way.Once the main raditor was blown totaly clean ran fine.Wish the book would explain this betterIJ Good luck! Tiger