Skip the auto shop - Our mechanics make house calls

Q: Popping sound in the radiator

asked by on

When the temperature gets high the radiator on the driver's side starts making a popping sound. I can actually see the top of the radiator move a little bit each time that it pops. There's also a gurgling and whooshing sound coming from the upper radiator hose. The car doesn't ever overheat and you can still hear the sounds even after the car is turned off. What could be causing it to make that sound?

My car has 179472 miles.
My car has an automatic transmission.

The noise is the coolant is turning into steam due to low amount of coolant to water concentrations. The ratio should be 50% coolant to 50% distilled water or just purchase a 50/50 coolant that is already mixed. Since you say your engine is not overheating then this is the most likely cause of the popping since these engines may get over waters boiling point of 212 degrees F. Have your coolant replaced if it tests with a low boil point meaning it is not mixed correctly. Once it is drained you may want to replace the thermostat also. This is just in case it is not opening all the way or at the correct temperature. If you need help with either of these issues a certified technician from YourMechanic can come to either your home or place of business to make repairs.

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

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: How difficult should putting a new hub assembly on be

Hi there. Replacing a wheel bearing or hub assembly is not a job that should be completed if you haven't done it before or without having a professional mechanic provide some onsite assistance. It's always best to have a professional...

Q: electrical ( headlights )

It is possible both bulbs are burned out. The low beam filament in each bulb should be tested with an ohmmeter. The bulbs can also be powered off the car to see if both filaments work but be wary of...

Q: Intake manifold leaking water. How can I fix it.

Hi there. You will have to drain the coolant and remove the intake manifold to replace the gaskets to fix the coolant leak on the intake manifold. If you need further assistance with the coolant leaks, then seek out a...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
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.