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80 Posts
I have already bought a spare thermostat as the previous owner told me that the 99 4.0 will overheat from time to time. I have owned the truck for a couple months and it overheated for the first time tonight. I had been driving for about a half hour, everything was fine until it over heated. Have not checked the coolant level in a few weeks but is it possible that the thermostat was working fine and then closed up? or is it more likely that I should look elsewhere for the actual cause of tonights delay? :?: