Skip the auto shop - Our mechanics make house calls

Q: Overheating problem with my car.

asked by on

My car is overheating and leaking water.

A: Coolant system leaks completely disable the...

Coolant system leaks completely disable the the engine cooling system from properly cooling the engine. This can cause serious engine damage if not addressed. The problem with some of these leaks, they are not detectable unless the cooling system is placed under pressure. Often times, as engine coolant leaks it will leave a white residue or even moisture in the area where the leak is occurring.

One important note: NEVER remove the radiator cap on a hot engine, even with a leak, the system could still have pressure and you could get serious injury by removing the radiator cap.

Once the suspect component or hose is identified replacing the component and its associated seal or gasket will remedy both the leak and the overheating. You may want to enlist the help of a mechanic, like one from YourMechanic, who will be able to pressurize the cooling system to identify where the leak is coming from. Then safely make the appropriate repair and pressure test the system again afterwards in order to verify that no other leaks exist. This cooling system upon refilling it has a bleeding procedure that must be followed in order to ensure all air is purged from the cooling system. Without bleeding the system, overheating can still occur even though the leak was repaired. A qualified technician will be able to properly fill and bleed your cooling system to ensure the cooling system works to optimum performance.

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: Oil and coolant leak

Hello...thank you for your question. Prior to buying and installing parts, a trained professional must diagnose the leak(s). Among the more common scenarios we see in this industry, and on this Q&A board, are ones where the consumer, or worse...

Q: Ac compressor clutch isn't engaging on high fan speed setting while it engages on the prior three fan speeds which are all slow.

The blower not working is most likely due to a fault with the blower resistor. When you go to high blower speeds the A/C may disengage the compressor if the cycling switch cycles or the high pressure switch gets over...

Q: F-150 loses power while trying to go reverse

Fix your exhaust and coil packs first, because if you'd want to get everything running right and your exhaust is leaking, that messes with your air flow out of the exhaust, which makes the oxygen sensors respond weirdly and can...

Related articles

P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.
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.