better have the head gasket checked for leaks
Have you checked to see if the elect. fan comes on ?
try changing your ignition coil
At highway speeds, YES!
They "reset" while driving at highway speeds.They "reset" while driving at highway speeds.
when overheating occurs at highway speeds the cause is usually. a radiator or coolant circulation problem, Check for a restricted or clogged radiator.
If by this you mean only "hot heat" when drive at highway speeds likely thermostat bad and/or almost stuck and takes long time warm up from high engine RPM during highway driving.
Assuming the tires were properly balanced and a rim isn't bent, it's possible the CV joints are worn.
If the check engine light is or has illuminated, check for codes. The codes may help lead you to the problem.
A US highway is an all access highway, like a main road; it includes businesses, houses, and direct intersections. Top speeds on the average US highway are 55 mph. An interstate highway is a limited access highway that is meant for commute. It includes no property entrances, and interchanges at high speed. Speeds range from 65 to 75 mph (about 90 to 105 km/h).
Warrego Highway is open as of 14/1/11 from Toowoomba to Dinmore with reduced speeds on many sections.
I don't use mine until I reach highway speeds.
running out of gas??