Whining Noise When Accelerating: 2015 Mazda6 iSport (with Sound)? - Mazda 6 Forums : Mazda 6 Forum / Mazda Atenza Forum
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post #1 of 5 (permalink) Old 08-10-2019, 07:30 PM Thread Starter
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Question Whining Noise When Accelerating: 2015 Mazda6 iSport (with Sound)?

Evening



Over the past few weeks (months?), I've noticed a whining noise coming from the front left end of my 2015 Mazda 6 (Sport). It gets faster and slightly louder when I accelerate, but it disappears completely when I press on the brake, even a light tap of the brake. I've come across other threads, but it doesn't appear the sound matches that which my vehicle makes. Most other threads comment on a rattle noise or the audio clip that one has posted doesn't match what I hear. To me, it sounds similar to when one's brake pads need replacing, except I'm hearing it during the opposite motion (when I accelerate as opposed to when I am braking). Any ideas?


Link included (with sound) : https://vocaroo.com/i/s03qUDRQS09U


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post #2 of 5 (permalink) Old 08-11-2019, 12:33 AM
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Quote:
Originally Posted by M4zd4Chick View Post
Evening
hopefully, this site lets me keep the link up so you guys can hear it
I am not sure if I am hearing what you describe or not because the only "high pitched" sound I get sounds like audio feedback.
Generally when I hear high pitched sounds I think brakes or bearings. In your case since you state it "disappears completely" when you hit (even a light tap) the brakes I am going with brakes. Frequently the pads will be in contact with the rotors even when not being pressed and this can cause a high pitched sound. Sometimes these things just have to play out (meaning get worse) but if it is really worrying you then have the front rotors turned (machined). If you have enough pad left the roughened rotors will re-bed with the pads and let you know if that was your sound culprit. If your pads are beyond the half way point then just redo the brakes.
Good luck.
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post #3 of 5 (permalink) Old 08-11-2019, 06:31 AM Thread Starter
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Perhaps “whining” wasn’t the best description. Squeaking? Like a squeaky wheel that moves quite fast? 🤔 I’ll try the pads/rotors.
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post #4 of 5 (permalink) Old 08-12-2019, 02:34 PM
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Is there something in the passenger seat whining?

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post #5 of 5 (permalink) Old 08-13-2019, 12:26 PM
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I have the same exact car like you but I remember this happening on a 2000 mazda Protege. This was caused by a missing caliper bolt. The bolt that tightens the pads too the caliper. I had to get a caliper bolt and problem solved. Check your cailper bolts it's very important you do, you don't want a brake failure.
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