Q: Issues with coolant pouring out of the overflow

asked by on

My car has coolant issues. It has gone about 185,000 miles. When I drive, it is usually around the city with a lot of stop and go in the traffic. One time, I turned it on and came after few minutes. I heard some noise under the hood. When I opened it, I saw coolant pouring out of the overflow. The mechanic didn't find anything wrong but replaced the thermometer. The issue persists. It happened again but coolant started disappearing. What caused this? How can I fix it? Thanks.

Hi there. If the engine is losing coolant, then the location of the leak needs to be found first. A leak will allow the coolant to get low enough to cause it to overheat. I start by doing a pressure test on the system to locate the leak. If nothing turns up I would do a dye test. If nothing shows up on that test either, then it more than likely has a head gasket leak.

It is common for the head gaskets to leak on this engine and cause this. If there is an external leak, then that would need to be repaired. The water pump and the radiator are common external failure areas. If you need to have this looked at, consider YourMechanic, as a certified mechanic can come to your home or office to detect any coolant leaks, or any other issues, and then make the appropriate repairs.

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. Issues with coolant pouring out of the overflow

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: If the thermostat is bad would it cause the heater core to not work properly?

Hello - you are correct. If the thermostat is stuck open, not allowing the engine to warm up properly, there won't much, if any, heat in the passenger compartment. However, if you are smelling coolant in the passenger area, chances...

Q: Q: Battery and brake lights on

Hello. The battery light being displayed on the dashboard is a common indicator of a faulty alternator. The alternator supplies proper power to the vehicle while the engine is running. If it fails, the vehicle wont be able to supply...

Q: Need a new serpentine belt

Hi Sean. Replacing a serpentine belt is not that expensive, when it's done by a professional mechanic who knows how to complete this process. In most cases, prices for replacement can range from $200 to $400 based on the vehicle...

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...
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.