Possible reasons: low or no coolant; faulty thermostat, faulty water pump; faulty radiator fan or relay; clogged radiator; leaking hose(s); other reasons could be (especially if the exhaust is white "smoke") blown head gasket; cracked cylinder head.
Could be,Low on coolant,A stuck closed faulty thermostat,A faulty cooling fan motor/system,
Low anti-freeze makes a car run hot going 70 mph.
what could cause a 2004 grand am to run hot? we have put new head gaskets on, water pump, thermostat, and cleaned the radiator.
Usually the rad is not providing enough cooling and the extra heat provided by the a/c working can make it run hot.
Beetlejuice - 1989 What Makes BJ Run 4-53 was released on: USA: 20 November 1991
Could be a variety of causes, but as with most cars, the top three suspects will be: old and inefficient radiator, insufficient water IN the radiator, failed thermostat governing the point at which the cooling fan cuts in.
change your antifreeze fill cap.
no check thermal stack
Unplug wires and run a hot from the battery to the hot on fan and a ground from the fan to the ground on the battery, this will test the fan.
maybe the fan doesn't work or the thermostat is not good
The problem is with the coil or coil pack. There is a large bolt through the coil that goes into the block it will sometimes get hot when it does the engine will not run.
The fan motor my be out. Open hood let car run for a few minutes and see if your fans come on if not my be the problem.