New owner, Hi! Couple of questions... [Archive] - MINI Cooper Forum - MINI2 Mini Cooper Forums

: New owner, Hi! Couple of questions...


Ursine_Attack
Nov 12th, 2011, 11:23 PM
Heya guys, new 2002 cooper S owner here, just thought I'd drop in and say hi!

Loving the experience so far, ridiculously fun car :)

However! I've got a few issues suddenly popped up, and could do with a few questions answered if people have got a moment!

First off, here's a quick photo of the new baby:
[Attached Image]

Lots of stuff planned for her, including a 15% pulley, but first I've got a couple of issues to sort out.

I'm not sure if the following is all part of the same problem or two separate problems. I've got a seriously warped brake disk on the front right side that snatches when braking lightly and makes the car stop in a jerky fashion!

When I get a bit of speed going I'm also getting a serious rumble from the front right hand side, I'm wondering if the two may be related?

I'm wondering whether it's a) just the brake disks playing up and making a racket, b) the wheel bearing being shot and allowing the brake disk to move around or c) the right hand drive shaft

The clues are as following;
The brakes are snatching with a squeaking noise quite viciously
If you power it up to about 80 mph very rapidly the noise will disappear

I'm leaning more towards the rumbling being a CV joint at the moment because when I powered it off the drive in reverse earlier I got exactly the same type of noise, but *really* loud. It kinda feels like CV because they have a tendancy to wear in one direction...

Any thoughts guys? I'm going to order new brakes on monday and get them swapped over as I'm always a bit suspicious about brakes on a new car!

Any help would be appreciated!

ash_bash
Nov 14th, 2011, 07:44 AM
Heya guys, new 2002 cooper S owner here, just thought I'd drop in and say hi!

Loving the experience so far, ridiculously fun car :)

However! I've got a few issues suddenly popped up, and could do with a few questions answered if people have got a moment!

First off, here's a quick photo of the new baby:
[Attached Image]

Lots of stuff planned for her, including a 15% pulley, but first I've got a couple of issues to sort out.

I'm not sure if the following is all part of the same problem or two separate problems. I've got a seriously warped brake disk on the front right side that snatches when braking lightly and makes the car stop in a jerky fashion!

When I get a bit of speed going I'm also getting a serious rumble from the front right hand side, I'm wondering if the two may be related?

I'm wondering whether it's a) just the brake disks playing up and making a racket, b) the wheel bearing being shot and allowing the brake disk to move around or c) the right hand drive shaft

The clues are as following;
The brakes are snatching with a squeaking noise quite viciously
If you power it up to about 80 mph very rapidly the noise will disappear

I'm leaning more towards the rumbling being a CV joint at the moment because when I powered it off the drive in reverse earlier I got exactly the same type of noise, but *really* loud. It kinda feels like CV because they have a tendancy to wear in one direction...

Any thoughts guys? I'm going to order new brakes on monday and get them swapped over as I'm always a bit suspicious about brakes on a new car!

Any help would be appreciated!

Its possible that the now 'unbalanced' brake disc is causing vibration which you say you are experiencing up until 80mph.

Either way I would take the wheel off and have a look at the bearings as the warped disc causing vibrations could have had an impact on them or other steering/suspension components.

Ursine_Attack
Nov 15th, 2011, 11:17 AM
Hmm, may have diagnosed it, the brake disks were totally shot so I changed them over at the weekend. That stopped the grab/shimmy.

While I had the drivers side apart I grabbed the driveshaft and there's a lot of play in it, it can be moved up/down about 2-3mm at the engine end, and the whole shaft will move in/out of the CV joint about a half inch - think it's had it!

Will order a replacement shaft from ebay!