Q: My car is overheating and the coolant is leaking from the radiator - 2000 Honda Civic

asked by on

My car keeps overheating. If I fill the radiator with water it does not overheat. It does not hold coolant there seems to be a leak because I find antifreeze stains on my driveway. Radiator is 4 months old.

My car has 158000 miles.
My car has an automatic transmission.

The cooling system is designed to be a closed, pressurized system. It acts kind of like a pressure cooker. When there is a leak in the system, it causes the water to boil and will heat up quicker, as the air in the system will not dissipate the heat like the coolant is able to do. There are several places that a leak can occur. The radiator, the hoses, the water pump, thermostat housing, and so on.

It would be best to have a certified mechanic, such as one from YourMechanic, take a look at it and identify where the coolant is leaking from and suggest any needed repairs.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 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!
  1. Home
  2. Questions
  3. My car is overheating and the coolant is leaking from the radiator - 2000 Honda Civic

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: Can moisture on perforated leather damage the heated seat element?

I don't think it would damage the elements since they are encased in plastic material. I would however recommend not spraying anything directly on the seats. In the future you should apply it on a clean rag and wipe it...

Q: New power steering pump leaking

Hi there. If the new power steering pump is failing, then it is defective and needs to be replaced. Double check to see that the lines are installed correctly and are tight. As for the battery, it may just need...

Q: Possibly blew head gasket

If water was being added while the engine was still hot, this may be the cause for the water being expelled as it boils almost immediately as it comes into contact with hot components. If a cool engine is creating...

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
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...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...