Making a chirping-gurgling noise?

Tiny
CLINTMALLORY02
  • MEMBER
  • 2013 HYUNDAI SONATA
  • 140,000 MILES
Hello, I have a 2013 Hyundai Sonata that is making a chirping/gurgling noise when I initially accelerate. It is very noticeable if the AC is on or if im going at a constant speed I can hear it then it goes away. Its unpredictable it just happens at times when I first hit the gas pedal. This has been going on for awhile now no other issues. What could this be? Ive had the serpentine belt and belt tensioner replaced about a 2 years ago.
Sunday, February 4th, 2024 AT 3:46 AM

4 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 50,520 POSTS
Where is the noise coming from, the engine bay? inside the car? Can you please shoot a quick video with your phone so I can hear the noise? That way I can tell for sure what's going on. You can upload it here with your response. We need to hear the noise, so we know which direction to go to help you fix the car. It takes time to upload so please be patient.

This guide may help:

https://www.2carpros.com/articles/engine-noises

To me it sounds like the serpentine belt, or the heater core has an air bubble in it. I would wait until the engine is cold and then open the radiator cap to check the coolant level. Also, if the replacement belt is of a low quality, I would swap it out for a new one. While the engine is running inspect the belt operating, if there is a lot of vibration the tensioner can be bad as well. Check out the images (below). Please upload pictures or videos in your response to the problem so we can see what's going on.

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Monday, February 5th, 2024 AT 11:48 AM
Tiny
CLINTMALLORY02
  • MEMBER
  • 2 POSTS
Thank you for your reply. This is the sound make sure your volume is all the way up to hear.
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Wednesday, February 7th, 2024 AT 4:14 AM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 50,520 POSTS
Thanks for the video. It does sound like there is air in the heater core. I would wait until the engine is cold and then check the coolant level in the radiator. Can you please move the HVAC controls from hot to cold and then from floor to defrost to see if the noise changes?
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Thursday, February 8th, 2024 AT 9:18 AM
Tiny
KEN L
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  • 50,520 POSTS
Anything?
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Friday, May 10th, 2024 AT 5:25 PM

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