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Chirping noise when driving over rough Terrain or small dips in the road

Tiny
ADDIE89
  • MEMBER
  • 2015 MAZDA CX-5
  • 4WD
  • MANUAL
  • 72,568 MILES
There was no noise coming from the back until I took the vehicle in for an oil change, and they notified me I needed my ball joints replaced and my back shock replaced. The vehicle just had the left and right lower ball joints replaced in the front as well as the back left and right shocks replaced. The noise no longer happens when going over speed bumps. It is still present when going over rough terrain at times or small dips on the road. It goes away than comes back and is not a constant noise.
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Saturday, December 4th, 2021 AT 11:21 AM

8 Replies

Tiny
KASEKENNY
  • MECHANIC
  • 18,907 POSTS
This sounds like there is another suspension component that is causing all this that replacing the rear shocks has altered or dampened the noise. So anytime you change a part, and it makes a difference to the noise then we are at least in the area of what is causing the noise.

The fact that this makes this noise when hitting a bump or dip in the road points to a suspension component and the fact that this is a chirping noise, points to metal on metal.

This normally occurs when these two metal parts are supposed to be insulated from each other so I would suggest starting with checking the upper and lower spring insulators.

Here is a guide that will help with these types of issues. It may not fit exactly but will give us a better idea on what we need to be looking for.

https://www.2carpros.com/articles/chirping-noise

The way to find this is to start isolating components by removing any that are able to be like the rear sway bar and then inspecting any of the rubber components for rub marks and witness marks on metal components.

Let's start with this info and then work our way through it. If you are not able to find anything, can you try to get a recording of the noise? Hearing it may help us pinpoint what the noise is. Thanks
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Saturday, December 4th, 2021 AT 5:53 PM
Tiny
ADDIE89
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  • 4 POSTS
I took the vehicle back to the dealership today that installed the shocks, the mechanic could not find the location of the noise and stated that Yes, the shocks are on properly and not loose and he also checked the suspension and stated everything looked fine. They suggested it was a loose part on the back of the trunk and re-tightened them. However, the noise is still present. I do have an audio recording of the noise while driving on the road, with no speed bumps. I tried to upload the audio, but the File Type is not allowed. Thank you in Advance!
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Wednesday, December 8th, 2021 AT 6:18 PM
Tiny
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Sounds good. I sent you a message. If you can try and send me the file, I will see if there is anything else we can come up with. Thanks
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Thursday, December 9th, 2021 AT 9:44 AM
Tiny
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  • 18,907 POSTS
Thanks for emailing it. If that noise is on a smooth road, then I suspect that is a heat shield or some other body component. That does not sound like a suspension related noise.

Basically, we need to start with checking the undercarriage for any loose components. Use a rubber mallet and just tap all over the components under the vehicle including the exhaust and see if there is anything loose or rattles.

If not, then we will have to start checking body panels, but I suspect that is something on the undercarriage as it is much too fast and consistent for a suspension noise on a smooth road.
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Friday, December 10th, 2021 AT 6:38 PM
Tiny
ADDIE89
  • MEMBER
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We've given it time; the heat shield was indeed making some of the noise. The heat shield was folded, and it has helped a great deal with the noise. Is there a way to open the hutch panel I believe it's called? When I open it an close there is some noise there as well.
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Saturday, January 15th, 2022 AT 7:12 PM
Tiny
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That is great news.

I am not sure I know what the hutch panel is. Can you get a picture of it and I am sure we can figure that out.
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Sunday, January 16th, 2022 AT 7:34 AM
Tiny
ADDIE89
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The panels inside.
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Saturday, February 12th, 2022 AT 6:49 AM
Tiny
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Oh. The plastic panel on the liftgate. I assume you mean the hatch as it is called sometimes.

Sorry, I should have known what you meant.

Yes, that panel just snaps in with a bunch of push pins.

You need to start in a corner and pry it up with a screwdriver so that you can get your fingers under it. Then slide them around the panel to get a good grip and give quick firm pulls down. This will start to pop the clips out and then just work your way around.

I attached a diagram that shows where they are.
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Saturday, February 12th, 2022 AT 7:49 PM

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