Prominent knocking sound on 997 when turning right.....

Prominent knocking sound on 997 when turning right.....

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philcray

Original Poster:

846 posts

203 months

Saturday 5th December 2009
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I had previously noticed a slight knocking sound when turning right and today it has become very prominent and seems to happen when any right hand down is applied to the steering wheel (even on a slight bend in the road)- it varies in frequency but can be like a rapid drumming and is very noticeable from within the car. Previously, when applying full right hand lock, eg pulling out of the drive, it had felt as if the front tyres were skipping slightly or had run over a stone with the asociated slight kick on the steering wheel....

The noise happens at any speed and does not happen at all when turning left, even at full lock.

The car is an 07 plate with 16,000 on the clock.

I have spoken with Porsche Kendal where I bought the car and am taking it in next week to be sorted (hopefully) but wondered if anyone had experienced this or had any thoughts on the problem?

graeme36s

7,031 posts

217 months

Sunday 6th December 2009
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Hi phil. Check the wheel bolts are tight and correctly torqued. It is not that uncommon to find some numpty has forgotten to torque them up properly.

greygoose

8,261 posts

195 months

Monday 7th December 2009
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Broken spring?

B16 FYS

1,930 posts

208 months

Monday 7th December 2009
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Wheel Bearing? (maybe???????????????)

summersmum

21 posts

172 months

Monday 7th December 2009
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philcray said:
I had previously noticed a slight knocking sound when turning right and today it has become very prominent and seems to happen when any right hand down is applied to the steering wheel (even on a slight bend in the road)- it varies in frequency but can be like a rapid drumming and is very noticeable from within the car. Previously, when applying full right hand lock, eg pulling out of the drive, it had felt as if the front tyres were skipping slightly or had run over a stone with the asociated slight kick on the steering wheel....

The noise happens at any speed and does not happen at all when turning left, even at full lock.

The car is an 07 plate with 16,000 on the clock.

I have spoken with Porsche Kendal where I bought the car and am taking it in next week to be sorted (hopefully) but wondered if anyone had experienced this or had any thoughts on the problem?
The skipping you felt when turning the wheel on full lock at low speed is exactly that, much more noticeable in cold weather, I wouldn't worry about that, just get Kendal to confirm it.

The other does sound a bit like a wheel bearing but I can't remember the last one we did!!

pete a

3,799 posts

184 months

Monday 7th December 2009
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snapped suspension arb droplink ???

philcray

Original Poster:

846 posts

203 months

Monday 7th December 2009
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Hi

Thanks for all the feedback, I have booked the car into Porsche Kendal so hopefully it will be recified shortly. I wasn't expecting to have to take the car back so soon....!

997_C4S

29 posts

181 months

Monday 7th December 2009
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Hi. My 997 is doing very similar, only when I turn right. Sounds more like a rubbing noise on my car than a knocking, but very noticeable with the radio off. Noticed it a few weeks ago, have booked in to OPC for next week so will let you know what they come back with!


[Drivers side rear wheel]

Edited by 997_C4S on Monday 7th December 22:24

philcray

Original Poster:

846 posts

203 months

Tuesday 8th December 2009
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Cheers! Mine is definitely a drumming rather than a rubbing, I will feedback what the fault was for reference.....!

_gez_

1,013 posts

194 months

Tuesday 8th December 2009
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997_C4S said:
Hi. My 997 is doing very similar, only when I turn right. Sounds more like a rubbing noise on my car than a knocking, but very noticeable with the radio off. Noticed it a few weeks ago, have booked in to OPC for next week so will let you know what they come back with!


[Drivers side rear wheel]

Edited by 997_C4S on Monday 7th December 22:24
If its rubbing then high chance it the heat shield behind the disc that just catching a little. Can be pushed back easily.

philcray

Original Poster:

846 posts

203 months

Friday 11th December 2009
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graeme36s said:
Hi phil. Check the wheel bolts are tight and correctly torqued. It is not that uncommon to find some numpty has forgotten to torque them up properly.
Surely that couldn't happen, not with the 111 point Porsche check, 20 points of which are presumably checking the wheel bolts.....

The knocking got worse on a short run yesterday, I checked when I got home and found the locking wheel nut on the rear passenger side wheel had actually fallen out.... Presumably whoever had last taken off the wheel had torqued up the other bolts and then forgotten the locking one, it has probably been finger tight for the last 2000 miles until it finally decided to make a break for freedom.

I checked the bolts on all the other wheels, they were all tight except one on the front drivers side which I could nip up a little. I spoke with Kendal OPC and they expressed surprise at such a happening, I am taking the car in on Monday when they will hopefully pop another locking wheel nut to help avoid a "3 wheels on my wagon" experience....

The good news at least is that the knocking has stopped....

qureshia

4,208 posts

206 months

Friday 11th December 2009
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philcray said:
I spoke with Kendal OPC and they expressed surprise at such a happening, I am taking the car in on Monday when they will hopefully pop another locking wheel nut to help avoid a "3 wheels on my wagon"
hopefully they will fit a full set of 4 otherwise you will end up carrying around two adaptors