1989 Ford F 350 "truck heats highway speed" Questions

...truck is a 5-speed manual, 7.5L V8 with about 150k on the engine. The first time it happened was a few months ago when we had unusually warm weather for the time (live in Yuma, so 100+ is normal). ...

the heat does not work until highway speeds and when i get off the highway it wont heat again I would recommend flushing your cooling system with water and then with compressed air

...the rpm's speed up it does not keep up with engine speed, thats why it heats up at highway speed. Difficult to diagnose because you cant always tell if it is spinning as fast as it is supposed to

...highway speeds 65-75 mph the engine overhaeats? hi this is because the radiator may have chocks in it. so the rate of cooling might be reduced. so the cooling while normal running wil be ok but when ...

2007 Impala (police package) climate control system will not heat the vehicle interior. Fan will not run. Fan works intermittently, but not consistently. At highway speeds, some heat enters the ...

speed gets up to highway speeds the windshield begins to fog up and cabin temp drops. your thermostat may be stuck open cahec it and replace it dont forget to rankme and my solution that easy! i was a

...highway, but when I'm on a side street at lower speed, the heat cuts out - is this simply the thermostat or something more serious. most likely its the thermostat. u build more heat at higher engine ...

highway speeds without a load. Fluid changed with ATF as specified with no improvement. 5 speed manual transmission. Recenly replaced clutch, throwout bearing, pressure plate, flywheel. No performance

...speed no matter what the dial is on. It does seem to blow a little faster if I am driving around at highway speeds or faster than in town speeds. I was just wondering what might be causing it. could ...

heats all the time, you could have a bad thermostat,, collapsed hose, stopped up radiator or radiator low on water. If it overheats at slow speeds but cools down when you ge to highway speeds, you may