I have 1985 Jeep Cj-7 6 in line 4x4 stickshift 4 gears. It runs like a wild beast but only in city driving. When I take it on the Highway and drive about ten min going 65 its starts heating up and running hot but as soon as i get off the highway it starts cooling down. Does anyone know why this is happening man i want to fix i love that Jeep more then my left hand!!!! Please Help Yahoo'rs