90 Ford f150 5.0 engine gets hot?
The radiator is full, the water pump is working and circulating, the belt is good and fan is working, I get hot air when heater is turn on, I do have the thermostat out of it because it was sticking a while back. So I'm stumped on this one. Anyone have any suggestion what I'm over looking
First thing you should do is put a new thermostat in it.Run a 180° during the spring and summer months then switch to a 192° for fall and winter.A computer controlled vehicle won't warm up to proper operating temp when thermostat isn't installed which causes the computer to run in open loop mode all the time. If coolant is circulating ok through the radiator, the most likely cause of overheating is a faulty fan clutch and/or faulty radiator cap. Make sure the temp gauge is working properly too.It might have a faulty temp sending unit that controls the gauge.It is installed in the lower intake manifold on driver side. There's also a chance that you might have a blown head gasket from where the thermostat was sticking closed.Wet spark plugs, steamy smoke from tailpipe, constant coolant loss but no leaks, detonation&milky substance mixed in oil are all signs for a blown head gasket.Without a thermostat bein installed, the engine shouldn't be getting over 160-170° unless fan clutch or cap is bad
Blown head gasket. Check for ANY trace amounts of oil in your radiator(oil floats to top) or antifreeze (water) in your oil which will make this light tan sludge in your oil.
Fan clutch? Also cap? How about a new thermostat? What about the inner condition of the radiator? If the coolant system was abused, id bet the bottom 1/3 of your radiator is plugged with mud.
is it using coolant or just running warm? It is normal for that engine to run 210-220, and balance the coolant system first so its not losing, then figure out if your temp reading is accurate, ford is famous for the big normal that covers 92% of the guage.
also, bugs in the radiator? Shroud? Is it a serpentine drive fan like it should be as well as waterpump? When was the last time heads were off? Didn't put the small holes or blanks in front? 302 is a good engine and easy to diagnose.
At that age, head gasket could be leaking w/o obvious signs; in some cars, the intake manifold can leak and cause heat probs.
lubrication probs can cause heat probs, too.
check for coolant circ in heater core.
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