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Chirping noise while driving 2008 cx9

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2007 Mazda CX-9 Touring
Does anyone have any idea why I get this chirping noise. I hear it inside the car while driving. It's on and off. What is it that i need to replace. At first I thought it was the blower motor but it happens even when it's off. Any help would be greatly appreciated. Thanks in advance.
 
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2008 CX-9 Touring
Can you give more context? Under what conditions does the sound occur? Does it happen with the car is moving? Does it align with the engine revving? Does happen at idle? That kind of stuff...
 
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2007 Mazda CX-9 Touring
It happens when I am driving the car on the street local traffic it comes and goes. I can hear the sound inside the car with the windows rolled up. On the highway the sound is not there. If I rev the engine from a standstill no sound. I also noticed that if I hit a bump the sound goes away for a moment.
 
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2007 Mazda CX-9 Touring
I had the brake booster replaced almost a year ago, when that started to go it made a whistling noise when you would hit the brake pedal and sometimes you had to exert more force than normal. It only happens while driving. I tried revving the engine while at idle and no noise. I am wondering if its the wheel bearings. My passenger in the front says that it sounds like the chirping is at their feet, maybe that little bit of info might help. Also sorry for the late reply, hoping to get more help here. I also want to thank the two of you for your input.
 
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2010 CX-9 GT
^^^^ Check the brake pads, they make noise when they are worn.

The wheel bearings typically just start to get louder and louder, but it's more of a grinding noise that doesn't go away. It just gets louder and louder the longer you drive on it.

The only other thing I can think of is a CV joint.
 
This may be the sound I heard on my 2010 the entire time I had it. Really hard to explain the sound with words only. Kinda like a quick bu bu bu bong sound that I discovered happened almost every time I passed the 40 mph speed give or take. The dealership was never able to replicate or so they said. I’m thinking it maybe was something to do with the antilock brakes resetting. Just a hunch coming from a similar sound I had from an earlier G35 after backing up and pulling forward. In any case it never amounted to anything that I could tell. Car was pretty much trouble free in the 10 years and 130000 miles I had it.
 

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