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?
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. Popping sound in the radiator

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: Car will not go forward or reverse

It sounds like some mechanical damage may have occurred with your transmission. It is also possible that your shift linkage maybe damage preventing the vehicle from going into gear. I would recommend having your transmission inspected by a qualified transmission...

Q: Car shuts down randomly while driving

Yes, from what you describe it would appear that the ABS module may be having an issue. The flashing light indicates that a problem has occurred, and that the ABS system is disabled. The vehicle should still brake and stop...

Q: I installed 2 new shocks from eBay, refurbished from the core of an oem, also a new compressor from eBay. (I can send you the lin

Hi there. Our mobile mechanics provide repair and diagnostic services onsite, but we're unable to offer repair assistance without being there. We also do not offer repair services on aftermarket part installations or service. Your best bet is to locate...

Related articles

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...
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...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.