HELLO, I HAD A SAME PROBLEM FEW DAYS A GO FOR MANY MONTHS AND I WAS SEARCHING FOR THE ANSWER OF THAT SAME QUESTION. ABOUT ONE MONTH AGO I HAD A COMPLETE CAR WASH INCLUDING ENGINE SURROUNDINGS, RADIATOR ETC. SUDDENLY I FOUND THAT MY CAR IS NO MORE OVER HEATING AFTER THAT CAR WASH. MAY BE THERE WAS SOME CLOGGING IN SOME AREA OF COOLING SYSTEM, PROBABLY DUST SOMEWHERE. ADNAN, adnanayb@Yahoo.com
It could be your serpentine belt, thermostat or water pump.
have you checked the fan
Thermostat and radiator
It can be several things. A clogged radiator. Not enough coolant in the radiator. Using water rather than coolant. A blown head gasket. A cracked head. Running against some kind of resistance, such as an engaged emergency brake, a stuck brake caliper, etc. Other things.
That depends on the thermostat. If it's a 185 thermostat, the engine should run at 185. If it's running too hot, check the thermostat, radiator and water pump. If it's running too cold, replace the thermostat.
This is likely a stuck thermostat.
Yes. The thermostat just helps the engine run at a more efficient temperature. Without a thermostat, all possible coolant circulates through the radiator and keeps the engine running at a low temperature. It wastes fuel and is hard on the engine. Also, when there is no thermostat the coolant is sucked so hard that the radiator hose can collapse, then NOTHING is circulated and the engine overheats until the internal pressure gets great enough that the hose expands again. In general, it's not a good idea to run without a thermostat, but it is done all the time.
Just guessing on this one, but it COULD be that the thermostat won't open completely. At an idle, the coolant circulates enough to cool the engine but when the engine is producing more heat, like when it's running at 60mph, it overheats. Just a guess, but I'd start there. The thermostat is near the front of the engine, on top of the intake manifold. It's under the upper radiator hose. Pull the radiator hose connector housing and replace the thermostat.
broken thermostat; blocked hose to radiator or hole in hose; leak in radiator; etc..
Radiator fan inoperative, thermostat stuck closed, coolant low, radiator restriction, etc.
First you need to run the engine until the thermostat opens, you will see the water running through the radiator. the coolant will go down into the radiator You need to continue to add coolant until you don't see anymore air coming up, or coolant go down into the radiator maybe three times that the thermostat opens. When you have got most of the air out you will see the water running inside of the radiator then stop when the thermostat closes. Cycle it two or three times to be sure.
The unconnected hose is supposed to be unconnected. It is for overflow when the radiator overheats. You may not have a leak, it may be overheating because of cooling fan, thermostat, temp sending unit or something else. May just be overfull and running out when hot.