Whistling sound from front driver's wheel

Tiny
DANNYLASVEGAS
  • MEMBER
  • 2001 SATURN SL1
  • 2.2L
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 113,000 MILES
I have recently started hearing a whistling sound coming from the front driver's side wheel. It speeds up as I go faster and slows down as I go slower. It stops when I stop. I hear it going forward and in reverse. I can still hear it when applying the brakes. Turning one way or another doesn't seem to make any difference. Otherwise, everything seems normal. I just had a new rad put in, but I doubt that would have anything to do with it. I would appreciate any ideas/advice you can provide on this issue. Thanks.
Saturday, November 22nd, 2014 AT 7:35 PM

35 Replies

Tiny
JOHNNYT73
  • MECHANIC
  • 924 POSTS
Could be a warning tab on a brake pad touching the rotor or a wheel bearing.
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Saturday, November 22nd, 2014 AT 8:06 PM
Tiny
DANNYLASVEGAS
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It's an intermittent sound though, not constant. The time between the sounds gets shorter as I pick up speed. And it's not just when I apply the brakes, so it wouldn't be a brake pad, would it? I wish I could come up with a better word for it than "whistling", because it's not exactly. Maybe squeaking? I don't know. I guess I'll have no choice but to take it in and have it looked at. I was hoping to avoid that as I'm a single father on disability. Anyway, if u think of anything else, let me know. Thanks.
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Sunday, November 23rd, 2014 AT 3:23 PM
Tiny
SATURNTECH9
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If it were the brake sensor or if part of the brake went metal to metal then it could be the pad.I have the noise very random and the noise be there when applying the brake or stop when the brakes are applied.
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Sunday, November 30th, 2014 AT 7:34 AM
Tiny
DANNYLASVEGAS
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The sound is there both when brake are or are not being applied.
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Sunday, December 7th, 2014 AT 9:09 PM
Tiny
DANNYLASVEGAS
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It is there all the time, except when I come to a complete stop. I can compare it to striking a key on a piano. As I drive slow, it is like striking the key every 2 seconds. Then as I speed up the time between the strikes shortens, as if I'm striking it every second, and then 1/2 a second. Then if I get on the highway and above 100 km/hr, I can no longer hear it. But once I slow down, I can hear it again until I stop, then it's gone. So it's definitely related to the spinning of the wheel. But when I check the wheel, I see nothing unusual. Nothing stuck in the tire or wheel well.
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Sunday, December 7th, 2014 AT 9:21 PM
Tiny
AJ555
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Hey, did you resolve this issue and find out what was causing this sound? Because I have a Saturn 2001, and I’m having the exact same issue now with my front wheel making the exact same sound! Just like you described it and how it behaves when driving or stopping. Any ideas? Thanks!
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Saturday, February 12th, 2022 AT 3:36 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
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Hi,

It appears the thread was never finished. Let me try to help.

First, when you apply the brakes, does the noise change pitch? If it does, first inspect the brake pads as mentioned above. They have a steel sensor on them that is designed to touch the rotor when the brakes need to be replaced. That could be the noise.

Next, check the dust shield behind the brake rotor. They can get bent or rust and touch the rotor while it's moving.

I attached a pic of the sensors I mentioned. See if they appear to be touching the rotor. You should be able to see them through the wheel.

If you look under the vehicle, you will be able to see the dust cover behind the rotor. Inspect that as well.

One last thought. If you safely lift the front wheels off the ground, turn one at a time by hand and see if you can locate where it's coming from.

Let me know what you find or if you have other questions.

Take care,

Joe

See pic below.
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Wednesday, February 16th, 2022 AT 7:08 PM
Tiny
AJ555
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Thanks so much, Joe, for the kind reply!

I have to say this is a big mystery, still unsolved.

About a week ago, when this sound started, it sounded like it was the brake pads' sensor (it actually didn't change pitch when I applied the brakes, but only with slowing down - even without the breaks - and accelerating). So, I took the car to my mechanic, and he replaced the brake pads with new ones. I thought that was it, and everything was fine driving home. But the next day, the sound all of a sudden appears again!

So, on the weekend I put the car up on the jack and rotated the front left wheel by hand. It indeed made the sound of metal scratching metal (i.E. The sensor again?). So, the next day I drove back to the mechanic, and I heard this annoying sound all the way over there (not a short drive). But then when I get to the mechanic - just as with Murphy's law - he gets into the car and drives it around (with me) to listen to the sound and it's gone! Absolutely gone. He lifts the car up, inspects the wheels, and doesn't see, nor hear anything wrong! (I'm assuming he would see, or hear, if the dust shield was the culprit?). He said it might have been a stone or something that was possibly stuck between the rotor and that piece of metal next to it, but I don't know.

This is mind boggling. This Saturn (LW200, 2001) is just - something! I'm afraid to drive the car now, as I'm sure this sound will be back! Do you have a picture of the dust shield by any chance, so that I could take a look at it myself?

Thank you again!

AJ
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Wednesday, February 16th, 2022 AT 9:52 PM
Tiny
JACOBANDNICKOLAS
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Hi,

Did you check both front wheels to see if the sound was present? If not, which side made the noise?

I attached a pic below for you to see. The pic isn't specific to your vehicle, but basically, they are all the same or very similar.

The brake rotor sits directly in front of the dust shield. Take a look at it and let me know if you have questions.

Joe

See pic below.
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Thursday, February 17th, 2022 AT 2:14 PM
Tiny
AJ555
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Thanks Joe!

On my own, I checked only the front driver-side wheel, as that is where the sound seemed to be coming from, and indeed, when I put the car on the jack, that wheel made the metal-on-metal sound (see video attended!). At the mechanic, he turned both front wheels by hand, and none of them made a sound.

And thank you for the picture of the dust shield! I'll definitely check it!

AJ
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Thursday, February 17th, 2022 AT 4:39 PM
Tiny
JACOBANDNICKOLAS
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I hear it. Check the backing plate and if it is good, just confirm nothing is touching. If nothing is found, the last thing is the wheel bearing.

Let me know.

Joe
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Thursday, February 17th, 2022 AT 6:01 PM
Tiny
AJ555
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Thank you! Will do!

AJ
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Thursday, February 17th, 2022 AT 6:13 PM
Tiny
JACOBANDNICKOLAS
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Hi,

I noticed I haven't heard from you for a couple of days. Have you been able to check the backing plate/dust cover?

I don't mean to be a pain, but I'm just interested in knowing if it's fixed.

Take care.

Joe
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Saturday, February 19th, 2022 AT 8:02 PM
Tiny
AJ555
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Oh no, you're not being a pain at all, thank you for following up!

I actually drove the car to the mechanic again today, so that he could look at these things! The sound has been coming in and out these past few days. And of course, once I got to the mechanic, it was gone. No trace of it. So, I figured it must be related to heat. When the car is relatively cold, something makes the sound. When it is hot, that thing expands, and doesn't make the sound anymore (my mechanic is about 17 miles away from me, so it's enough for the car to get hot). I pleaded with him to lift the car up and simply look at the parts you mentioned, but he refused. Said he needs something to work with, i.E. He needs to hear the sound. Ugh.

So, the next time I hear this sound I am going to go to any car shop close to me, to have them look at it. I wish I could do it myself, but it's hard for me to see anything just lying under the car, and I don't really know what I'm looking at. :)

AJ
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Saturday, February 19th, 2022 AT 10:01 PM
Tiny
JACOBANDNICKOLAS
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AJ,

That has to be frustrating. I think you have a good idea. Get it to someone that can hear it before it stops.

I remember about 5 years ago having a similar issue with an Audi A4. However, although the sound (which sounded like bad brakes) existed all the time, it would change pitch when the brakes were applied. The fix for that one was pad replacement. The inexpensive ones installed were causing the noise.

Regardless, if you want, take a few pics of the underside of the vehicle where the backing plate is located. I should be able to tell if it looks like a possibility.

Let me know what I can do to help.

Take care,

Joe
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Sunday, February 20th, 2022 AT 6:38 PM
Tiny
AJ555
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  • 15 POSTS
Thanks again Joe!

I tried to get my hand and phone in there as much as I could and took a bunch of pictures. Uploaded them all to this Google Drive folder, if you want to take a look! They might all be of the same thing, but I just snapped a bunch of them, to make sure I am not missing anything that might be an important clue!

https://drive.google.com/drive/folders/1DowiTJCoT99J4WHZhMoA5VS7rMH0rQ0D?usp=sharing

Let me know if you see anything there, and thank you again,

AJ
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Wednesday, February 23rd, 2022 AT 1:02 AM
Tiny
JACOBANDNICKOLAS
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Hi,

It looks like the lower part of the dust shield is against the rotor. See the pic I attached. Check that and if it is, simply gently bend it away from the rotor and see if the sound is gone.

Let me know.

See pic below.
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Wednesday, February 23rd, 2022 AT 3:10 PM
Tiny
AJ555
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Thank you! How far should the dust shield be from the rotor, ideally?
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Wednesday, February 23rd, 2022 AT 4:43 PM
Tiny
JACOBANDNICKOLAS
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Hi,

I would simply make it even all the way around without bending it where it mounts. All in all, 3/4" approximately?

Let me know if that takes care of the problem.

Joe
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Wednesday, February 23rd, 2022 AT 6:10 PM
Tiny
AJ555
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Thanks so much! Will do!

AJ
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Wednesday, February 23rd, 2022 AT 8:29 PM

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