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        General >> Problems >> Grinding Noise.
        
(Message started by: emptypockets on Jan 30^th, 2010, 9:11pm)

Title: Grinding Noise.
Post by emptypockets on Jan 30^th, 2010, 9:11pm

Hi Folks.

There is a grinding noise coming ( I think ) from the near side rear. It only happens when coming up to a traffic light or slowing right down in traffic. On moving off again it is there and then disappears. Garage checked and changed both the rear discs and pads which had committed Hari Kari or Ruby Murray or whatever you call that.

Today the noise returned. As I approached the traffic lights I went into neutral and rolled slowly on but the noise was still there. This seems to be the brakes ruled out and the drive so any ideas please? The sound is best described as a worn out pad rubbing on a bad disc.

Cheers

Title: Re: Grinding Noise.
Post by Simmo on Jan 30^th, 2010, 9:16pm

Most likely cause is a wheel bearing. DO NOT ignore it!!. :)

Title: Re: Grinding Noise.
Post by Scorpio_Mike on Jan 30^th, 2010, 9:29pm

Agree with Simmo - sounds like a wheel bearing.

Common problem, have done my n/s rear wheel bearing twice in just over 2 years :(
Not difficult to do but the hub nut needs to be done up to 200 ft lbs so a big torque wrench is needed. I have one you can borrow if you are local. Whereabouts are you ?

If it goes 'clonk-clonk-clonk' then its the CV joint ( Simmo & me know all about these ;D )

Title: Re: Grinding Noise.
Post by Simmo on Jan 30^th, 2010, 9:51pm

Mike. His profile says Belfast !!. Long way even for you!!.

Title: Re: Grinding Noise.
Post by big_timer on Jan 31^st, 2010, 12:19am

i might be able to sort him out.
emptypockets just have a look at the previous posts regarding wheel bearings.you are lucky to have warning about the bearing on its way out,sometimes they just collapse without warning which could be very dangerous.

Title: Re: Grinding Noise.
Post by emptypockets on Feb 1^st, 2010, 4:59pm

Many Thanks Gents.

Car is booked in for Friday. Checked with the spannerman and he has the necessary torque equiptment. Will report back if this was a bearing or some other evil wee beastie. May I also enquire if it makes sense to do both rear bearings or is this problem peculiar to the nearside rear?

Cheers.

Title: Re: Grinding Noise.
Post by Simmo on Feb 1^st, 2010, 5:07pm

Personally I would simply deal with the one side. The nearside one seems to be the main culprit and various theories exist as to why that should be. Please do let us know the result. ;)

Title: Re: Grinding Noise.
Post by emptypockets on Feb 2^nd, 2010, 7:17pm

Thanks Simmo.

Spannerman has rang me to say that he doubts the fault is the wheel bearing as the noise should be constant. Does the Scorpio have a unique early warning noise from your past experiences?

Cheers.

Title: Re: Grinding Noise.
Post by tlundkvi on Feb 2^nd, 2010, 8:03pm

on 02/02/10 at 19:17:03, emptypockets wrote:

Mine had no warning sound whatsoever, it was just noticed as excessive play when the wheel was put back on after a tank change.

Title: Re: Grinding Noise.
Post by emptypockets on Feb 6^th, 2010, 11:53am

Well folks, the noise is still a mystery.

Spannerman states that the bearing is tight with no play. He had the car up on the ramps and running tests for some time and the noise was just not there. It really is very intermittent, so his advice, after checking everything else out is to run on and let this materialise to the point where it can be identified.

Cheers.

Title: Re: Grinding Noise.
Post by NormanHall on Feb 6^th, 2010, 12:27pm

as Mr Kodak said, let it develop

Title: Re: Grinding Noise.
Post by Highlander on Feb 8^th, 2010, 6:14pm

on 02/06/10 at 11:53:40, emptypockets wrote:

Did he check it with the wheel off the ground?

Title: Re: Grinding Noise.
Post by emptypockets on Feb 8^th, 2010, 9:02pm

Hi.

Not sure as I wasn't there. But he is a really experienced guy and has up to date equiptment.

Title: Re: Grinding Noise.
Post by Highlander on Feb 9^th, 2010, 10:33am

on 02/08/10 at 21:02:53, emptypockets wrote:

But he is a really experienced guy and has up to date equiptment.

So was Richard Hammond in his Jet car... ;)

Must be a drive related problem, putting it in neutral only eliminates the gearbox.

Sounds like there is some play somewhere ,stopping and moving off puts pressure on the drivetrain letting you hear the noise, once it gets a bit of speed up the torque on the affected area stops the vibration.

CV joint, Differential, Diff bearing, prop/UJ, gearbox output shaft bearing, wheel bearing

Wheel nuts crossed my mind but its had new brakes fitted so they should be ok

As you think its sided to the NS rear i'd look closely at the CV joints, diff and wheel bearing again, it has to be checked with the wheel off the ground or it wont show any play.

Title: Re: Grinding Noise.
Post by emptypockets on Mar 30^th, 2010, 10:14pm

Well.

Let it develop was the right advice. The grinding noise has returned after all this time and is indeed confirmed as the rear passenger side wheel bearing. The noise is more akin to a dust shield catching on a brake disc. Now there is play in the wheel and its on the verge of collapse. New unit delivered and fitted tomorrow.

Many thanks once again.

Cheers.

Title: Re: Grinding Noise.
Post by emptypockets on Apr 1^st, 2010, 5:29pm

OOPS! OOPS!

Further to my last report it now appears that the hub flange is cracked as well. There goes the Easter beer money. God knows why we do this.

Boo Hoo.

Title: Re: Grinding Noise.
Post by Simmo on Apr 2^nd, 2010, 3:09am

That's exactly why the advice is to deal with it straight away because delay is both dangerous and costly!.
This article (http://www.fordscorpio.co.uk/rhubs.htm) may help.

Title: Re: Grinding Noise.
Post by emptypockets on Apr 2^nd, 2010, 8:51am

Many thanks Simmo.

It may well have been me writing that article as it is a word for word description of what happened. I'm just going up now to collect the car, and hope there is enough left over after paying the bill for the consumtion of a few litres of the black stuff over Easter.

Cheers.

Just an after thought. Is this unique to one side or should they both be done?

Title: Re: Grinding Noise.
Post by Simmo on Apr 2^nd, 2010, 10:03am

There seems to be a tendency for the nearside one to go more so than the offside. I would say that now you know what to look out for in terms of warning signs just carry on until the day comes !!. Just be sure to get to it quickly though as that should save the hub. Hope you can enjoy a bevvy or two. Good for shock !.

Title: Re: Grinding Noise.
Post by tlundkvi on Apr 2^nd, 2010, 10:44am

Nearside is more prone to fail? Well on mine (LHD) the RH bearing failed, the other is 99% likely to be original (180000km), maybe this has something to do with the load balancing? Symmetrically the same...

Title: Re: Grinding Noise.
Post by emptypockets on Apr 2^nd, 2010, 8:53pm

Final report.

Total bill including vat £244.00.

It would have been less if some previous repairer had not taken a CHISEL to the said parts at some stage in the past. Still, not as bad as feared.

In conclusion I now intend to undertake a full internal Guinness change over Easter. In the past this has required up to three gallons. One for flushing and the rest for final top up.

A meal, a drink and a laxative in every pint. Utopia!