My Sonata is making a noise on and off????

Asked by Feb 17, 2017 at 02:06 PM about the 2012 Hyundai Sonata SE

Question type: General

I have a 2012 Sonata.  It has 97,000 miles on it.  For the last year, ever few
months it makes a noise then disappears for a few months.  So the
noise....It usually happens in the morning.  I drive a few miles and when I
step on the gas, it makes the noise.  It sounds like a muffled buzzy grinding
sound.  When I take my foot off the gas it stops.  It last for a few seconds.  
When it's making the noise, I can only hear it if the car is cold.  Again,
months will go by and there is no strange sound.  It sounds like it's coming
from the the passenger's side of the motor.  Doesn't sound like it's coming
from the wheel.  Doesn't seem to be affecting the engine or transmission
and I don't smell anything strange.  

3 Answers

79,705

Until you can have a mechanic drive the car and hear the noise this will likely remain a mystery.

I have some professional recording equipment, so I recorded it. Gave the file to the Hyundai dealers and they blew me off. Said mechanics had to hear it. I left it with them overnight, and of course, it didn't make the sound when they drove it the next morning.

Have them check your splash shield and remove the one on the passenger side!

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