Help to isolate noise

[hookoo3]

thstone, I think you may right. I checked my receipts and I see that all 4 cv boots were replaced and none of the cv joints. The outer boots were quite torn at the time so I now suspect the cv joints are done. Looks like I'll be replacing the complete axle shaft assembly now.

Has anyone actually used the cheap First Equipment Quality parts from China that are almost a tenth of the price of OEM? I know most will not recommend cheap knock-offs but has anyone had any results or reviews using them?

[Dale_K]

Auto parts stores sell a special grease for repacking CV joints. It would probably be worth the trouble to peel back one of the boots and see what it looks like inside. If it's really dry you could clean it up and re-grease it. Kind of a low probability repair effort but since it's so cheap (only cost is the grease) it's worth a shot.

[jcb986]

You could check with a few of the Porsche dismantlers for some used one's.

[hookoo3]

Hi, I've now replaced both axle shaft assemblies with new original Porsche parts. The grinding noise is still there. I can't really tell where the noise is coming from and it is a rubbing/grinding noise on every rotation. How can I identify if it is a front wheel bearing? What are other possible causes for the grinding noise? Thanks.

[jhandy]

does it get louder if you turn left or right?

get to about 50, put in the clutch, and coast, turn the wheel if the front bearings are really bad, it will make the grinding noise louder when you put pressure on the bearing. IE: more noise when turning left=right bearing out.

[kabel]

I am unclear, you only hear the noise when you are in motion, and not stopped correct? is the noise wheel-speed dependent or engine-speed dependent?

Even after inspecting all the other various suspension and mechanical components that might be the cause the noise, It could still be a tire(s). I've been through that only to finally put a new set of tires one and that solved the issue.