[BikerTrash]

I think I need to do some work on the cooling system on my truck. At idle and up to about 55 in runs a constant 190 degrees, hell even crawling around on the trail it runs cool. but get it on interstate about 70-75 and it comes up to 205 and when in the mud while I was running it hard I once saw it come up to 220. I stopped and let it idle to keep the coolant circulating through the head and it cooled down to 190 again in about 2 or three min but I dont know what could be causing it to act liek this.

It always ran a steady 190 regardless of what I did with my old clapped out engine. Thermostat sticking and not alowing full flow?