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Old 02-09-2020   #1
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Vibrating/knocking noise from front right of vehicle

Hi All,

Will try to make a long story short, here goes :

I have a 1997 Fiat Punto Mk2, 1.2 Litre Manual Petrol, 60Hp 8V.

Had all tyres changed 4 weeks or so back. Shortly after, we noticed a strange knocking/rubbing/vibrating noise from the front right of the vehicle (at least thats where it sounds like its from) while we are in the car driving, this noise would increase in frequency as the car got faster kind of almost like a flapping sound - flap, flap, flap, flap...... Decided it could be the front brake pads and visual inspection confirmed this. Mechanic changed the pads (right pad was very low) and decided that discs were fine so didnít change them.

After this, the noise was still there.

We then noticed a further noise, this was more of a knocking from the rear of the vehicle. After inspection, I saw that the rear rubber exhaust mounts and the one in the middle of underside of the car had all perished and split in half and so exhaust was pretty unstable. For now, I have repaired the mounts using a temporary fix of cable ties around them. Exhaust seems stable enough and this other knocking noise has stopped.

The original noise I mentioned is still there.

It makes no difference of the car is free-rolling in neutral or with foot on the gas. The thing that effects it is the speed the car is going at, higher speed means higher frequency of the noise, slower the car speed, slowing the noise rhythm.

Ive attached some video recordings so that you can hear the noise, these were captured using a mobile phone inside the car, with the phone held on the drivers side beneath the steering wheel. Zip file of the vids is attached. Hopefully these help to explain what I mean.

Again to me it sounds like something rubbing or causing friction between brake pad and disc, but as pads have just been changed this is unlikely to be the case?

Thanks in advance for any advice.

Attached Files
File Type: zip (16.73 MB, 4 views)
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Last edited by Gozoguy; 02-09-2020 at 13:35. Reason: I Put this in the wrong forum, meant to put in Fiat Punto. I will repost it
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