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Strange noise

yep checked the fluid level hot and cold and its fine, is the abs pump on this side could it be that as the warning light is on but I put that down to a sensor?
 
use a rubber hose as a make shift stethoscope to find where the noise is coming from. If you are hearing it from inside the car bear in mind sound can travel (eg if you have the drivers window down but not the passenger side).

Bleed the power steering by turning the wheels from lock to lock a few times with the engine running, then check the fluid level again maybe.
 

ORIGINAL: markmsa

yep checked the fluid level hot and cold and its fine, is the abs pump on this side could it be that as the warning light is on but I put that down to a sensor?

Now you didn't mention the abs light.........

That's probs what it is although I would reckon you would be able to feel the abs working through the pedal when you touch the brake.Put your ear just below the side repeater indicator on the drivers side wing and you will be able to hear the abs pimp is it is running.
 
The abs doesn't seem to work, done a basic test this morning ( stamped on the brakes and it just locked up) the noise does seem to be coming from the area where the pump is, can the pumps be rebuilt or is it a sealed unit, also whats the chances of finding a decent second hand unit? from what I can find out if one of the sensors have gone or bad earth etc would this disable the complete abs system?
 
Decent second-hand unit will be about ÂŁ60 delivered from the states.

I've changed the pump on both cars I've had to repair the ABS. The last one needed a couple of sensors as well but this one just needed a new(er) pump and all is well. I gave it a very liberal coating of Dynax too in a hope of preventing it from going bad.
 
seen Porsche apart have one on ebay for ÂŁ160 with a best offer which looks very clean and tidy may see if I can get them down a bit?? the usa ones are cheaper but if they are faulty its a pain sending them back. is it just a case of re-moving the inner wing plastic and then exchanging the pump as I will be doing all this myself as on a tight budget..
 
If you're sure that the pump is the problem then it's not too bad to change it. Wheel off, arch liner out and you do it through the gap and from underneath. 4 nuts hold the pump mounting plate in at the bottom, it took me 5 mins to remove the first three and about an hour and a half for the 4th due to them rusting up.

Make sure that you have a ratchet spanner and a brake-line spanner to get the nuts loose first without rounding them off. You'll need to bleed the brakes afterwards as well.

The reason they fail is that they get corroded and the surface can be seen to physically blister. If the used one looks good then it will most likely be good - there are various checks to make sure that it is the pump that's the problem though, here's a good place to start:

http://m.rennlist.com/rennforums/showthread.php?t=272248

 
Wheel bearing?
CV joint?
I'm assuming these are all new on your car so shouldn't be doubted but if there's a noise, there's a noise!
 
Yes new OEM bearings. The cv joints are not new but greased and they looked OK
starnge that the noise is intermittent and very loud .....but only lasts for a few minutes and doesn't come back till every thing has cooled then warmed up
 
Kongsodoken said:
Yes new OEM bearings. The cv joints are not new but greased and they looked OK
starnge that the noise is intermittent and very loud .....but only lasts for a few minutes and doesn't come back till every thing has cooled then warmed up


Are the CV joints correctly orientated? There is a circumferential groove. I can't remember whether the groove should be towards the outside or the inside without checking but a starting point would be to check that the left side mirrors the right. I can stick my head under mine tomorrow and check if you want.
 
guess it could be many things....cv joints click so doubt it's those, could be something rubbing? perhaps check that the brake dust shields are well away from the discs...a video for the sound might help?

Pete
 
does sound like a rear wheel bearing by your description. A good diagnostic test is to take a long tight bend (in both directions), which will load the wheel bearing on the opposite side to the direction of the bend.
if you coast round the bend in neutral you'll eliminate the engine or transmission being the source of the problem.
 
I had a similar sound to this, prepared to do a new rear wheel bearing - on starting the job realised one of the rear hub nuts had worked itself slightly loose. Suspect a previous owner's repair hadn't torqued up properly and slowly worked itself loose. Might be worth a quick check.
 
Sorry not been around much I will drive it again the weekend see what happens
ready with the phone to record the noise
 

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