Q: Car overheated and blew out coolant

asked by on

My car overheated and blew coolant all over. It had already been leaking coolant.

Coolant can leak from a variety of places. The system, when warm, is under pressure; 22 psi on your A4 Quattro. Even when the engine is at normal operating temperature, when a sudden leak occurs, it can “blow” everywhere. If the engine was too hot when the leak occurred, the loss of pressure could have caused the coolant to boil. Adding pressure increases the boiling point; remove the pressure, and it boils instantly. Faulty head gaskets can add even more pressure to the system.

In any case, the entire system will need to be inspected to determine what is leaking. After the leak(s) is/are repaired, the performance of the system will need tested: The radiator, thermostat, cooling fans, and water pump. Consider YourMechanic for an inspection of your overheating issue, and repair - our mechanics provide diagnostics at your home or office.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Car overheated and blew out coolant

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Coolant reservoir empties in one trip

If the radiator cap has failed (i.e. it doesn't hold the specified pressure built up in the cooling system when the car is running), the cap will prematurely open while the car is running and coolant will flow into the...

Q: I have 1988 oldsmobile cutlass ciera 2.8liter. I have had five mechanics check the car for a popping sound but they could not figure it out.

The popping sound from the engine sounds like the engine's timing is off or the fuel system is not delivering enough fuel to the engine. There could be a fuel injector that maybe sticking and not spraying properly. The popping...

Q: Brake pedal feels hard

It sounds as though you may have a brake hose that has collapsed inside. There are three flexible hydraulic hoses on your car that allow the brake lines to move with the wheels. There are two on the front and...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
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...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.