Why does my car run hot when sitting still?
A Broken Radiator Fan If your car begins to overheat when idling, but the temperature gauge moves back down once you get going, it’s most likely due to a broken radiator fan. However, when your car is sitting still, the radiator fan should kick in, keeping the air moving over the radiator to help cool down the coolant.
How long should I wait for my car to cool down before adding coolant?
In almost all cases, it’s a better idea to just let it cool down for at least 30 minutes before adding any coolant/water/whatever. The engine would then be very hot, turning most of the coolant into vapor. Your engine’s cooling system relies on coolant to circulate and remove heat from the engine.
Why is my car overheating after replacing the radiator?
Overheating. Just replaced radiator and thermostat, but still hasn’t fixed the problem. My car overheated the other day, and it was leaking coolant horribly. I got a new radiator, which stopped the leaking, but the car was still overheating so then we tried replacing the thermostat but it is overheating even now.
When is the top of the radiator supposed to be hot?
Either-way, the top hose gets hot after the thermostat has opened. The time the thermostat takes to open depends upon factors such as: In this post you’ll learn how the coolant system works, when the top hose should get hot and what you should do if it doesn’t. The coolant system after the oil system is the next most critical system.
When does coolant flow back to the radiator?
Coolant is as you know designed to cool your engine, it moves around the the system in a circuit. The thermostat has a special function within the circuit, it’s job is to restrict coolant flow back to the radiator when coolant temperature is below 180 deg F (83 deg C).
Is the water pump still hot after replacing the radiator?
I have replaced the radiator, water pump, it still run hot. I took out the thermostat and it still run hot when you drive it any distance. The temperature gauge return to normal when it is setting still and running. Help I’m at a lost to the problem. 71 people found this helpful. Did you ever find the cause of this?