Ford Expedition Forum | Lincoln Navigator ForumForum for discussion of the Ford Expedition and Lincoln Navigator. (Ford Expedition Forum, Lincoln Navigator Forum)
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while on a cross country road trip, the truck started to feel like it lost gas or a strong tug, on and off (the tug) for about 30 seconds. then it started to over heat alot!!! we went to a shop and they installed new spark plugs, cables, oil, and air filter and cleaned out the radiator. problem persist i took it to dianostic (what ever the machine) and every thing appears to be in perfect condition WHAT COULD IT BE?