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Customer states guages goes up pegs hot under load only. Load the truck and drive while monitoring the EOT pid. Anything above 200 degrees would be something to keep an eye out for and if it hits 240 degrees, it's time to pull over. Ford gages aren't very useful in something like this. Visual ok rad. clean inside and out. Eot ect within 5 deg. Coolant full no leaks hold vac with rad kit. head gasket ok system press. very min. No codes. Check fan works ok when commanded up. Customer did wash rad,condenser and put in new stat. Make sure the t-stat is a Ford unit and not a Stant or Gates or something like that. I pulled the water pump seems ok tight on shaft. My question is the front cover has pitting inside pump area, and a 2-3 deep wear area at the bottom part of pump hole. Could this be my overhet problem. I wouldn't bother with that cover for the time being. I would say there are other issues at the moment. I really dont have anything to compare it to. Any thoughts are appreciated, Thanks (I did post a pic to the photo post, page but I do not know how to put it on here)
I sent you a PM on picture posting.