craig1410
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| posted on 14/6/10 at 12:11 PM |
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Astra VXR grinding noise from front RH side. Ideas?
Hi,
A friend of mine has just taken me out for a short run in his 06 plate VXR to ask if I can tell what is causing a noise from the RH front wheel. Here
are the symptoms.
Mixture of grinding and tinkling noise from wheel when turning right around roundabouts. The noise remains even if brakes are pressed lightly. The
noise sounds a bit like grinding glass if that makes sense. Not quite the usual dull clicky, grinding noise of a duff CV joint. It did seem slightly
worse if accelerating while turning.
He has had the lower wishbone changed already but this hasn't helped. No signs of play in the wheel bearing or TRE. I couldn't reach the
anti roll bar to check it for play and I was in office clothes so didn't want to lie under the car to check for driveshaft play.
I did rotate the wheel and although there is no loud noises I could feel some signs of grinding through my finger tips.
My thoughts are that the CV joint is on the way out but the boot isn't split and I wouldn't have expected a CV failure for a 4 year old
car. The driver likes to use the performance from time to time but is far from being a hooligan and he looks after it well.
Any ideas of cause and approximate cost to repair?
Many thanks,
Craig.
[Edited on 14/6/2010 by craig1410]
[Edited on 14/6/2010 by craig1410]
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r1_pete
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| posted on 14/6/10 at 12:14 PM |
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I'd go for the wheel bearing or outer CV joint.
IIRC those boots on the CVs have a habit of splitting, shedding their grease, and running dry.
[Edited on 14/6/10 by r1_pete]
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britishtrident
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| posted on 14/6/10 at 12:15 PM |
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Either the brake dust shield rubbing on the disk or wheel bearing.
[I] “ What use our work, Bennet, if we cannot care for those we love? .”
― From BBC TV/Amazon's Ripper Street.
[/I]
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skinned knuckles
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| posted on 14/6/10 at 12:18 PM |
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i know you said you checked for wheel bearing play but i'd check again. in my experience, if its a CV problem you tend to get clunking on the
extremeties of the steering lock. a grinding noise and a grinding sensition you can feel when you rotate the wheel in the straight ahead suggests
bearings. could be a daft question but have you had the wheel off to check for debris wedged in the caliper that could be grinding on the disc?
A man isn't complete until he's married, then he's finished
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craig1410
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| posted on 14/6/10 at 12:22 PM |
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quote:
Originally posted by skinned knuckles
i know you said you checked for wheel bearing play but i'd check again. in my experience, if its a CV problem you tend to get clunking on the
extremeties of the steering lock. a grinding noise and a grinding sensition you can feel when you rotate the wheel in the straight ahead suggests
bearings. could be a daft question but have you had the wheel off to check for debris wedged in the caliper that could be grinding on the disc?
When I could feel the grinding sensation it was with the wheel at about 3/4 of full right lock.
No, I've not looked for debris as it was just a quick look at lunchtime while in office clothes.
I will pass on any suggestions though.
Thanks all,
Craig.
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b16mts
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| posted on 14/6/10 at 12:35 PM |
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Ive had a very similar noise on 2 difference cars. Both times it was a small stone/piece of gravel stuck between the disc and the shield plate
thingy.
annoying to diagnose, but a very cheap fix!
may sound silly, but worth a look first off before spending any money. does he drive on gravelly roads much (i used to be down a 1 mile farm track,
hence it happened a couple of times to me)
best of luck.
Martin
who says you can't drive a kit car when you're 6'5"?
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craig1410
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| posted on 14/6/10 at 09:07 PM |
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Hi,
I've passed on everyone's suggestions and he is off home tonight to have a look for stones in the works. I still think it is the CV joint
myself but will let you know the outcome either way.
Thanks again,
Craig.
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craig1410
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| posted on 17/6/10 at 11:54 AM |
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Problem solved! It was the brake disc shield on the opposite side of the car rubbing directly on the disc!
He had a go at the car two night ago but couldn't budge some of the wheel nuts even with a proper wheel nut wrench. I brought in my 24"
breaker bar yesterday along with some copper grease and went round his car taking all 20 studs out one at a time and lightly greased them. One of the
nuts was so tight it started to shear my short socket extension bar but I got it off in the end.
So last night he had a look at the right hand side, where the noise appeared to be coming from, and saw that the disc shield was quite close to the
disc. He bent it slightly back to provide more clearance. He then looked at the left hand side and found that it was actually touching the disc! After
bending it back slightly as well, the noise has gone away!
So, a good result all round and as a bonus he will now have a good chance of getting his wheel off in the event of a puncture! 
Thanks for all your suggestions,
Craig (and Gordon).
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