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| Here's a funny thing...; Peculiar noise... | |
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| Tweet Topic Started: Sun Dec 13, 2009 11:38 am (796 Views) | |
| RobertE | Sun Dec 13, 2009 11:38 am Post #1 |
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Serial victim...
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I've noticed that Blodwyn (2.3-16) occasionally makes a strange noise at the back, a sort of high-pitched droning, but only when moving. It's a sort of intermittent hum wnich stops when the car does. The handling is crisp and very sharp, but I suspect a looming fault with the SLS. Or could it be something else? Has anyone encountered this? All my cars have SLS but I've never come across this before. Thanks in advance... |
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| sportline_stu | Sun Dec 13, 2009 11:54 am Post #2 |
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More than part of things
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Are you sure it isn't the dif? Stu |
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| aemt | Sun Dec 13, 2009 11:54 am Post #3 |
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Serial 190E Owner
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Have you eliminated your petrol pumps (rear left) and diff?.Where is the noise coming from. Get someone to travel in the back to listen |
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| sportline_stu | Sun Dec 13, 2009 11:58 am Post #4 |
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More than part of things
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Petrol pump - good idea. stu |
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| jeremy | Sun Dec 13, 2009 12:02 pm Post #5 |
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Too Far Gone To Help
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Droning will be the diff , welcome to the 16V noisy diff club . Jeremy |
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| RobertE | Sun Dec 13, 2009 12:12 pm Post #6 |
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Serial victim...
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No, I don't think it's a differential noise, as it's intermittent, but I suppose I can plonk her on a rolling road. It sounds more like a fuel pump noise, about which I've learned q. a lot recently! I hope it's the pump - cheaper... |
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| aemt | Sun Dec 13, 2009 12:25 pm Post #7 |
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Serial 190E Owner
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Agree Rob. Most likely one of the fuel pumps. As you say not so expense but a warning to do something. |
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| shrekky | Sun Dec 13, 2009 12:31 pm Post #8 |
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Troll hunter
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not quite true jeremy...........................it can be a rear wheel bearing,i learnt this the hard way.................i heard the droning,jack the car off the ground and checked both rear wheel bearings.........no play !! so i presumed it was the diff, i got another diff.................and it wasnt until i hade the car off the ground and lossened the driveshaft nut on the passenger side wheel and was removing the driveshaft it became apparent it was the bearing,as i pulled the driveshaft out,the wheel just flopped about.......................yet when the driveshaft was in place it was tight,with no play.............................i have said this a few times,the only way to properly check a rear wheel bearing is to loosen the driveshaft nut,tap the driveshaft in a few mm's |
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| Big Ben | Sun Dec 13, 2009 12:52 pm Post #9 |
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Sneaky 2.5-16 Driver!
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Had this a couple of times. Usually it gets less noisy if you take a sharp corner in one direction and noisier the other way round. The unloaded wheel is the one with the faulty bearing, ie: quiet on a left hand bend means left hand wheel! |
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| jeremy | Sun Dec 13, 2009 4:18 pm Post #10 |
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Too Far Gone To Help
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Aaaaah , that would make sense on my valver , coz thats what's happening !!!!! Jeremy |
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| mazza | Wed Dec 23, 2009 3:46 pm Post #11 |
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More than part of things
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hi had my SLS removed and the trumpet like noise is still there...so its not the SLS..also noticed that the noise was still there even if the car was stationary..got under the damn thing in summer and discovered that its petrol related..some kind of pressure relief... mazza |
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