Skip the auto shop - Our mechanics make house calls

Q: I can't figure out why there's a leak coming out of the coolant reservoir tank

asked by on

We recently had our radiator replaced and it is not leaking out of the radiator but it is leaking out of the coolant resevoir and it continues to overheat

My car has 150000 miles.
My car has an automatic transmission.

Hi there. Check the radiator cap to see if it is sealing. Put a pressure tester on the radiator cap and pump it up till the pressure spits out, then let it sit. If the pressure drops down, then the seal or valve on the cap has failed. I recommend replacing the radiator cap. If the cap is good, then I recommend changing the thermostat. If you need further assistance diagnosing your vehicle, then seek out a professional, such as one from YourMechanic, to help you with your vehicle.

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!
  • Home
  • Questions
  • I can't figure out why there's a leak coming out of the coolant reservoir tank

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: Oil light on

Hello. The PVC valve shouldn’t cause your oil light to come on. Most likely, the problem is that the oil is low, which would cause the light to come on. The oil pressure could be faulty, which would also cause...

Q: Vehicle Not Starting/Turning Over

Hi there. Regardless of what is failing in the starting circuit, with proper diagnoses, the problem should not run thousands of dollars to repair. It could be, as simple as, a faulty starter relay. The difficult part is, the problem...

Q: I got into an accident the other day and I missed my turn and when I went to pull into a drive to turn around it was like I really

The wheel speed sensor does not have anything to do with the vehicles ability to turn. The wheel speed sensors help to control the traction control and ABS systems. When they detect a wheel speed beyond what the ECU knows...

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...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...
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.