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Topic: Grinding Noise. (Read 1706 times) |
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emptypockets
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Grinding Noise.
« on: Jan 30th, 2010, 9:11pm » |
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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
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John
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Simmo
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Re: Grinding Noise.
« Reply #1 on: Jan 30th, 2010, 9:16pm » |
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Most likely cause is a wheel bearing. DO NOT ignore it!!. 
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Scorpio_Mike
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Jeep Grand Cherokee 3.0 V6 & 2.8 Sierra XR4i 4x4
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Re: Grinding Noise.
« Reply #2 on: Jan 30th, 2010, 9:29pm » |
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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  )
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Sierra XR4i's are great...especially when fitted with 4WD
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Simmo
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Re: Grinding Noise.
« Reply #3 on: Jan 30th, 2010, 9:51pm » |
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Mike. His profile says Belfast !!. Long way even for you!!.
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big_timer
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2.3 manual ultima saloon
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Re: Grinding Noise.
« Reply #4 on: Jan 31st, 2010, 12:19am » |
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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.
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emptypockets
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Re: Grinding Noise.
« Reply #5 on: Feb 1st, 2010, 4:59pm » |
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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.
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John
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Simmo
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Re: Grinding Noise.
« Reply #6 on: Feb 1st, 2010, 5:07pm » |
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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. 
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emptypockets
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Re: Grinding Noise.
« Reply #7 on: Feb 2nd, 2010, 7:17pm » |
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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.
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John
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tlundkvi
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Ex. Scorpio 2.9 24V -95
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Re: Grinding Noise.
« Reply #8 on: Feb 2nd, 2010, 8:03pm » |
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on Feb 2nd, 2010, 7:17pm, emptypockets wrote: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?
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Mine had no warning sound whatsoever, it was just noticed as excessive play when the wheel was put back on after a tank change.
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emptypockets
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Re: Grinding Noise.
« Reply #9 on: Feb 6th, 2010, 11:53am » |
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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.
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John
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NormanHall
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Scorpio-itis
Posts: 84
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Re: Grinding Noise.
« Reply #10 on: Feb 6th, 2010, 12:27pm » |
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as Mr Kodak said, let it develop
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Highlander
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13 Scorpios, XR4x4, Suzuki SJ413 for off road :)
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Re: Grinding Noise.
« Reply #11 on: Feb 8th, 2010, 6:14pm » |
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on Feb 6th, 2010, 11:53am, emptypockets wrote: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. |
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Did he check it with the wheel off the ground?
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on Oct 17th, 2011, 12:35pm, Simmo wrote:I give up !  Too much for an old boy!  |
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emptypockets
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Re: Grinding Noise.
« Reply #12 on: Feb 8th, 2010, 9:02pm » |
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Hi.
Not sure as I wasn't there. But he is a really experienced guy and has up to date equiptment.
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John
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Highlander
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Re: Grinding Noise.
« Reply #13 on: Feb 9th, 2010, 10:33am » |
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on Feb 8th, 2010, 9:02pm, emptypockets wrote:| But he is a really experienced guy and has up to date equiptment. |
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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.
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on Oct 17th, 2011, 12:35pm, Simmo wrote:| I give up ! Too much for an old boy! |
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emptypockets
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Re: Grinding Noise.
« Reply #14 on: Mar 30th, 2010, 10:14pm » |
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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.
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John
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emptypockets
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Re: Grinding Noise.
« Reply #15 on: Apr 1st, 2010, 5:29pm » |
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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.
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John
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Simmo
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Re: Grinding Noise.
« Reply #16 on: Apr 2nd, 2010, 3:09am » |
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That's exactly why the advice is to deal with it straight away because delay is both dangerous and costly!.
This article may help.
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emptypockets
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Re: Grinding Noise.
« Reply #17 on: Apr 2nd, 2010, 8:51am » |
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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?
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John
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Simmo
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Re: Grinding Noise.
« Reply #18 on: Apr 2nd, 2010, 10:03am » |
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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 !.
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tlundkvi
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Ex. Scorpio 2.9 24V -95
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Re: Grinding Noise.
« Reply #19 on: Apr 2nd, 2010, 10:44am » |
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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...
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