Skip the auto shop - Our mechanics make house calls

Q: Car runs hot and antifreeze leaks

asked by on

My car is running hot. The antifreeze is leaking. The car will start, but it runs hot very quickly. The air conditioner also goes in and out when the car is running hot.

A: First we have to find out where the coolant...

First we have to find out where the coolant is leaking. That could be the cause of the over-heating, or just another symptom. Engines that heat up and run hot very quickly is a common symptom of the head gasket leaking. Combustion gases are entering the cooling system. Engines that are turbo charged are more prone to this because of increased combustion pressures. The AC working sometimes or not at all is normal with a hot engine. The computer disables the AC when the engine is too hot. AC adds a tremendous amount of heat to the engine compartment. I recommend having a professional locate any leaks and make the repairs necessary to get your car back safely on the road.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%

Get a quote

What others are asking

Q: Struggles to start, interior blowers turn on by them selves and central locking issues

Hello. From what you describe it would appear that your vehicle is experiencing a few different issues. Intermittent hard starting can be caused by many things. If nothing is happening when you turn the key, then it is possible that...

Q: Heater stops working during idling

Hello. I recommend checking the operation of the thermostat to ensure it opens and closes at the proper temperature. You also could have some air in your cooling system causing the heating system to blow cold at inappropriate times. To...

Q: Car overheating and the fan not working.

Hello. Cooling fan failure has been linked to the temperature switch going bad. I would recommend having a technician come out and test the switch and back-probe the fan to verify that it works. I would also recommend having a...

Related articles

P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the P0052 code means This code is seen when the Engine Control Module (ECM) tries to control the...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...