Knocking noise on braking - brakes respond fine

Liquid_Entity · 19 Oct 2018 at 18:49

Last weekend I did a 200 mile round trip. Noticed no noises at all. Cars been parked all week until tonight and I drove it away and noticed a clunking noise when braking. The brakes respond fine but it's no different whether at low speed or high.

I can't tell if it's front or rear or a combination as the sound is hard to pinpoint

Is there any quick visual things I can look for before I take a trip to kwik fit and get flleeced

Edit: mondeo mk4 08 reg 2.5T

Iamzod · 19 Oct 2018 at 19:14

Is it just on initial pedal press at any speed?

Liquid_Entity · 19 Oct 2018 at 19:17

I was doing 30 and gently eased on brake and it starts and gets worst the more I apply.

I'm thinking it's a ceased caliper or something. It was very wet on way home last Sunday and that was last time I drive it before tonight.

Dis86 · 19 Oct 2018 at 19:20

Sounds like a bit if corrosion build up.

Liquid_Entity · 19 Oct 2018 at 19:23

Could make sense as the rears are older than the fronts and sound definitely soundls more like rear

hominid · 19 Oct 2018 at 19:26

A ceased caliper will cause one wheel to be hotter than the rest, check axel to axel as the fronts will be one temperature and the rears another usually colder than the fronts.

What sort of knocking is it? is it loud? Do you get one knock or multiple per braking episode? Do you feel anything throught the brake pedal or the steering? Need more information really.

Could even be a stone trapped somewhere.

Liquid_Entity · 19 Oct 2018 at 21:55

It knocks like thump.... Thump..... Thump and it gets and louder the more I press the brake.

Sorry got no more at moment, will try and get more detail tomorrow.

Iamzod · 19 Oct 2018 at 22:01

Does the frequency increase with wheel speed?

Liquid_Entity · 19 Oct 2018 at 22:07

Only makes the noise on braking

andy_mk3 · 19 Oct 2018 at 22:10

It will be where the car has been stood, it happens sometimes, it will go away with use.

Semple · 19 Oct 2018 at 22:22

Can you take the wheel off and inspect the calliper and disk?

fastwunz · 20 Oct 2018 at 01:18

Semple said:
Can you take the wheel off and inspect the calliper and disk?

This

offitmassive · 21 Oct 2018 at 21:34

DTI gauge, check disc run out. does it clunk once or at like every wheel revolution ?

Dave · 22 Oct 2018 at 06:53

Dis86 said:
Sounds like a bit if corrosion build up.

Possibly this, I had the same knocking noise after leaving the car sat for ~4 weeks when on hols. A bit of heavy breaking later and it was fine again.

Liquid_Entity · 22 Oct 2018 at 07:21

andy_mk3 said:
It will be where the car has been stood, it happens sometimes, it will go away with use.

We have a winner peeps. It was fine on Saturday. I only thought it was odd because I only use car at weekends and this was the first time it made those noises.