Skip the auto shop - Our mechanics make house calls

Q: Coolant doesn't circulate and is leaking into coolant tank

asked by on

Hi.The coolant is leaking out of the car while it is running. I use dex-cool coolant. It seems that coolant doesn't circulate at all. If I refill the tank, the fan doesn't turn on. The car has a 2.2 L engine. The coolant leaks into the tank from overfill hose and although I had the thermostat replaced, the problem is still present. The low coolant light comes on when the temperature reaches around 205. Do you have any advice how to fix this?

A: Hello. If the coolant only leaks when the e...

Hello. If the coolant only leaks when the engine is running, then it is typically a failing water pump. This is the most common thing to leak under these conditions. The water pump should be checked for signs of leakage first. If it is not leaking then a cooling system pressure tester needs to be used to find the leak. It can also be a hose or a head gasket, but both of those will usually leak all of the time.

Once the leak is fixed, then the rest of the cooling system can be inspected and a block test can be done to make sure that there are no internal engine problems. If you want to have this repaired, consider YourMechanic, as a certified mechanic can come to your home or office to diagnose and repair your coolant leaks.

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: I just paid Dobb's $370 to replace an upper radiator hose. Was I taken advantage of?

I hesitate to pass judgement on other people's work and pricing because I wasn't there to learn the whole story. However, I can say that many BMW specialty shops are charging between 90 and 100 dollars an hour for labor,...

Q: Car won't shift,smoke coming from underneath,leaking transmission fluid.

You will need to have the transmission leak pinpointed to isolate the source of the issue. If one of the lines are leaking then it can be repaired but if the front pump seal is leaking then the transmission would...

Q: Need to swap engine from 2002 eclipse into 2006 eclipse

The 2002 engine used Head Cast # G6 and Block Cast # 4G64. The 2006 used Head Cast # G69M and Block Cast # 4G69. There are other differences between the two years as well. The principal problem is your...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
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...
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...