Humming/buzzing sound at low acceleration

toyota
camry

#1

Hi,
I got a Camry 99 le 2.2l
I took my car to th mechanics because of this humming/buzzing sound. I can hear in the cabin, but I am not 100% sure from where’s it’s coming from, it might be coming from the front right. It happens when the engine is warm and I am pressing on the gas pedal very gently and keep the engine at 1.2-2.0 rpm. The mechanic said it could be the alternator, because my battery was bad, I replaced the battery and it still makes that sound.
Can anyone tell me what else it could be?
Thabks


#2

Check this out. Is this the noise you are hearing? This is an easy fix


#3

Yeah! It sounds something like that, I and gonna check if that! But the my car didn’t make the noise when when not moving. I tried to rev the engine to 1.2-2 rpm on parking, it didn’t make the noise.