Hello,
An engine can overheat due to several reasons.
It could be simply for being low on coolant, stuck closed thermostat, bad water pump, faulty radiator, inoperative cooling fan or having a clog in the cooling system.
One of the most common causes of overheating is a stuck closed thermostat. When the thermostat fails at the closed position it prevents coolant from flowing. This makes the engine overheat. When the thermostat is stuck, you will have a noticeable temperature difference between the upper and lower radiator hose. One of the hoses will be significantly hotter than the other.
https://www.2carpros.com/articles/how-an-engine-thermostat-works
https://www.2carpros.com/articles/replace-thermostat
Take a look at this helpful guide, it goes over all the common cease for the engine to overheat.
You mentioned the vehicle was low on coolant. Are you able to locate a leak? You could have a leak in any of the hoses or radiator or the water pump.
https://www.2carpros.com/articles/engine-overheating-or-running-hot
Doing a pressure test can help find the leak easier.
https://www.2carpros.com/articles/radiator-pressure-test
I have attached diagrams for your reference.
Please let me know if you have any questions.
Thank you.
Images (Click to enlarge)
Dec 19, 2021 at 9:51 PM
