Knocking noise under heavy acceleration

[ictguy]

Started today. Put my foot down and heard a knocking noise and felt it through the floor of the car. Seems to be getting worse and now have a loud knocking noise transmitted through the centre armrest (can really feel this through my arm) over every bump.

Putting the car in neutral whilst it's moving still presents the knocking when going over road bumps. Could this be suspension related?????? This car has only done 55,000 miles!!!!!

[ekstroemtj]

Hi

If you would like to use the search option, you will find a lot of posts which are pointing zona problem with your drive shaft / cardan shaft.

[ictguy]

When I search, I get all kinds of hits - drive shaft bearing, bushes, shock absorber problems.......

Are you suggesting I need a new drive shaft or just the bearing?

[ekstroemtj]

You have to get under the car to check it. Many times its just the bearing.

[ekstroemtj]

You have to get under the car to check it. Many times its just the bearing.

[ictguy]

Thanks, could I cause more damage by driving it to a repairer?

[ekstroemtj]

If you drive slowly it will be ok.

[Hilux2400]

Check the wheels bolts are tight.

[ictguy]

Check the wheels bolts are tight.

That's the first thing I did. I honestly thought a wheel was loose.... They were all tight though. This really is consistent with the drive shaft bearing failing. Looks like I'll have to wait till Monday to get this confirmed though.

[ictguy]

Well, confirmed. The prop shaft bearing had failed. Started to drive the car to a garage first thing, but decided to call breakdown recovery to get it transported there - didn't want to cause any more damage!

They managed to fit a universal bearing, breaking the prop shaft and reassembling it. All fixed. Another £280 spent!!

Are there any other common problems I should expect on a 2004 Cayenne 3.2 v6?? Car has done 55,000 miles.