Low pitch squeak over bumps

[MakaveliX]

Last week I noticed a low pitch squeak going over bumps ( mainly smaller ones ) sounded like something in the boot was moving around but it's not that as I took everything out of the boot and it continues.

If I bounce up and down on every corner of the car I hear no noises from the outside whatsoever so I'd assume nothing wrong with the shock absorber or coil springs

Seems worse when going slowly over bumps

I will try lubricating some of the exhaust mounts later with silicone lubricant but want to know what the cause could be ?

Car is a 2017 Mazda 3

Thanks

Edited by MakaveliX on Wednesday 14th December 07:14

Edited by MakaveliX on Wednesday 14th December 13:48

[Jordie Barretts sock]

Suspension drop link or anti rollbar Bush has failed/is failing.

Will probably develop into a clunk over bumps.

Shouldn't be too much of a drama to get fixed. And decent garage.

[MakaveliX]

Jordie Barretts sock said:

Suspension drop link or anti rollbar Bush has failed/is failing.

Will probably develop into a clunk over bumps.

Shouldn't be too much of a drama to get fixed. And decent garage.

OK thanks.

Never had the tracking done on the car and was intending on getting it done soon. Is that something they'd look at as part of the tracking ?


Few months back I did clip a kerb when a car got too close to my offside which may have something to do with it ?

[Jordie Barretts sock]

Get it done before you get the tracking done. It could be contributing to the tracking being out, so if you get the tracking done without fixing it, you've wasted your cash.

Literally any back street garage that does MOT will be able to sort you out. I say does MOT because they tend not to be cowboys.

[MakaveliX]

Jordie Barretts sock said:

Get it done before you get the tracking done. It could be contributing to the tracking being out, so if you get the tracking done without fixing it, you've wasted your cash.

Literally any back street garage that does MOT will be able to sort you out. I say does MOT because they tend not to be cowboys.

I'm fairly sure the tracking is fine, wheel sits at 12oclock, returns back to position fine and the car doesn't steer to one side.

I'll take your advice then. I'll be getting the pads changed in January so I'll get the mechanic to look at the drop links and sway bar bushing then.

[Jordie Barretts sock]

Yeah, it's not desperately urgent, I don't expect. If there's no uneven tyre wear and it isn't pulling, what makes you think tracking needs doing?

[MakaveliX]

Jordie Barretts sock said:

Yeah, it's not desperately urgent, I don't expect. If there's no uneven tyre wear and it isn't pulling, what makes you think tracking needs doing?

Just as a regular check to make sure all is in order. Clipped the kerb over a month ago, noise started last Thursday so again may not be related.

[MakaveliX]

Surely if there was anything amiss with the suspension components, then by rocking the car on each corner you'd hear an audible noise from the outside on whichever is causing it ?

Just got under the car and the drop links seem fine, no obvious play in them and the bushings look fine.

Edited by MakaveliX on Wednesday 14th December 11:52

[Jordie Barretts sock]

Yes, because the car is stationary and they are bearing a static weight. It's when you go over a bump that the loads change and you get a noise.

An MOT garage will put it on their wobble plates or will crowbar different loads into the bushes to check.

[MakaveliX]

Jordie Barretts sock said:

Yes, because the car is stationary and they are bearing a static weight. It's when you go over a bump that the loads change and you get a noise.

An MOT garage will put it on their wobble plates or will crowbar different loads into the bushes to check.

Ok fair enough. It is most noticeable with the windows up. If I put the windows down I don't hear anything.

I know nobody can diagnose anything over the Internet but thanks for the information.

I'll get it looked at in the new year when I get me brakes done

[QJumper]

To be fair, it could be a number things beyond supension related, such as a loose spare, or rear seats creaking/not locked into place properly.

Lubricating the suspension components seems a good move though.

[PositronicRay]

QJumper said:

To be fair, it could be a number things beyond supension related, such as a loose spare, or rear seats creaking/not locked into place properly.

Lubricating the suspension components seems a good move though.

I had one, convinced it was suspension related. Turned out to be a bonnet catch. Dab of greas3 fixed it.

[Jordie Barretts sock]

That's true.

The air suspension on my Rangey has always creaked and groaned at low speed over the rough.

[MakaveliX]

I like to keep the parts on my car OEM ( Mazda official ) As I don't want the indy to put cheap aftermarket parts on it which could affect the handling negatively

Is it likely that when I get my pads changed, the independent garage can diagnose anything not right with the suspension components, and I then take it to Mazda to have whichever part is faulty replaced by them ?

Obviously if its just a bushing then I'd be happy for the indy to replace that.

Edited by MakaveliX on Wednesday 14th December 18:23

[QJumper]

MakaveliX said:

I like to keep the parts on my car OEM ( Mazda official ) As I don't want the indy to put cheap aftermarket parts on it which could affect the handling negatively

Is it likely that when I get my pads changed, the independent garage can diagnose anything not right with the suspension components, and I then take it to Mazda to have whichever part is faulty replaced by them ?

Or you could do what I do, which is buy the OEM parts myself and get my local garage to fit them.

[MakaveliX]

QJumper said:

Or you could do what I do, which is buy the OEM parts myself and get my local garage to fit them.

Good point. One garage around here does offer that service, but they let me down in the past by causing issues on me car. My go-to garage is excellent but not sure I can provide the parts for them to fit.

In regards to OEM parts, is the best place ebay ?

Suppose I will have to wait until they look at it, then I can make a decision afterwards based on what needs doing

I have checked the drop links and they seem fine. Springs look fine too. Only a brief look underneath the car as I have no axle stands

[MakaveliX]

Mechanic said bushings all look fine, no play in any of the suspension components. Even took It for a drive and said nothing to worry about. Also lubricated some of the bushings

He did say the noise I described to him could be from the inside of a anti roll bar bushing but wasn't willing to dismantle stuff as everything looked ok

Thankfully the noise has subsided a bit so I'm happy with that, providing the car is safe to drive and there's no play in anything that's fine by me

Edited by MakaveliX on Thursday 22 December 05:27

[Jordie Barretts sock]

Excellent!

Suggest you invent a name for your resident 'mouse'

[MakaveliX]

Yeah trying to ignore it but still does me head in.

The only thing which makes a difference is the temperature, the colder it is the more I notice it.

Everything looks fine regarding the suspension at the rear but the noise persists which is frustrating.

The day it started was when I went over a bump a bit too fast and when it was very cold... but surely that would have damaged the front suspension more than the rear due to the much heavier weight load at the front

Doubt its anything to do with the anti rollbar otherwise I'd hear it round tight bends and uneven roads.

It's usually only when going over flat, even, speed bumps at low speed. Higher speed = no noise

Edited by MakaveliX on Monday 16th January 15:47

[trevalvole]

When I had a Mazda2, there was a noise from the rear of the car - it was the folding rear seat back that wasn't secured properly. Folding it and then firmly moving it back into place fixed it. Have you checked things like that?