Noise coming through the A/C Vents

JEREMIAH90

MEMBER
2009 MITSUBISHI LANCER
4 CYL
FWD
AUTOMATIC
60,000 MILES

The vents in my car have been making a very peculiar noise lately. It sounds almost like a coffee maker. At least, that's the best description I could think of.

Interestingly, when I brake my car, the noise seems to increase along with the amount of brake pressure I am giving.

I have recorded a video with audio from inside the car. It has the noise I hear.

https://www.youtube.com/watch?v=yYh5EgnAYZM

Thanks.

2 Replies

JACOBANDNICKOLAS

MECHANIC
109,709 POSTS

I copied and pasted the link, but it doesn't match any documents on youtube. Does it sound like a liquid is moving around? If so, have you checked the coolant level in both the overflow and the radiator (when the engine is cold)?

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Monday, August 24th, 2015 AT 7:16 PM

JEREMIAH90

MEMBER
2 POSTS

You might need to remove the spaces in the link that were added when I pasted it. The video should be accessible. Anyway it sounds like a squealing type of sound. Like I said very similar to a coffee maker that is almost out of water and still trying to brew.

The noise specifically comes from the psssenger side.

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Wednesday, August 26th, 2015 AT 6:54 AM