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Vibration noise

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paul champion

New member
Since buying my 997 last Jan from Porsche dealer, have experienced annoying vibration noise from within cabin from behind drivers seat and somewhere on passenger side. Not continuous, at 30, 50 and 80 mph approx. Already been into dealer once - not as bad but still there. Dealer removed linings and put back. My first 911 - is this a common problem - any suggestions?
 
No, not a common fault in 997.

Could it be a loose seat mounting or backrest, do you think?

Try putting a bungy cord (elasticated luggage strap) around the backrest to clamp it down and see if this resolves the problem. If so, you'll need to tighten or shim the bracketry.

Take everything out of the glove box and luggage space. It's amazing how sounds travels in a car and this can often wrong foot a search for rattles and vibrations.

Otherwise check the running gear, wheels and tyres for balance and damage - these are the more obvious culprits.

Your dealer should really be sorting this out for you. [:(]

Good luck.

Clive.
 
Thanks Clive. Pretty sure that it is coming from inside the cabin. Nothing in glove box or luggage area - don't like any clutter!
[:)]. Trying to solve it myself at present, as dealership fair distance away.
 
You could try pushing against the rear quarter window while going along (when safe and legal to do so!) My previous car had a vibration/buzz/knock that was caused by that and needed the fixing bolts adjusted.
 
As a matter of interest, I've been plagued with a tiny rattle I've been chasing around the cabin recently. Turned out it was the PCGB metal tax disc holder one of my kids gave me for Father's Day. Just shows how noise can travel! [&:]

I also had a pesky PDK shift rattle, just after I got the car, that took a bit of locating - although this won't be the problem in your case. [8|]

How about the passenger seat belt? Try fully extending it under load to see if this resolves it. In which case you'll need to access the mechanism from behind the 'B' pillar trim panel.

Regards,

Clive.
 
ORIGINAL: Lancerlot
Try fully extending it under load to see if this resolves it. In which case you'll need to access the mechanism from behind the 'B' pillar trim panel.
Click to expand...
I seem to remember that was a known rattle on earlier 997... mine had it on the passenger side but was easily fixed by the dealership.

garyw
 
worth checking nothing has been dropped under the seats?................I had a rattle that turned out to be what looks like a screen mount for a satnav or mobile phone wedged under the passenger seat runner. It was difficult to see and remove!!! [;)]
 
According to the book, Ultimate Buyers' Guide, by Grant Neal and Peter Morgan, there can be an irritating vibration from hard back sports seats, when empty, especially with a PSE. I suggest you try it with a passenger to see if it disappears. This is a know fault.
 
ORIGINAL: AndySmith

According to the book, Ultimate Buyers' Guide, by Grant Neal and Peter Morgan, there can be an irritating vibration from hard back sports seats, when empty, especially with a PSE. I suggest you try it with a passenger to see if it disappears. This is a know fault.
Click to expand...
Really, [&:] its the first time I've ever heard this even mentioned..
 
My 997 is in in the morning to have one of the clear rear wheel arch protectors replaced and to try to resolve a rattle / vibration coming from the passenger side, it sounds like it's around the door area , it sounded really bad yesterday with the noise being a little nearer but still passenger side, found to be my glasses sitting on the passenger seat.
It is far worse in Sport mode and even worse on concrete roads or roads where the tarmac has a heavy stone content, I dread to think what it would sound like if the suspension was switched on as well.
Steve
 
I had a noise from the passenger side to the rear of the door sounded like vibration on a rubber seal but turned out to be one of the securing nuts for the quarterlight seal, quite a common fault according to Planet 9 but not so common here apparently.

The 997 has the same securing feature. It's necessary to secure the bolt using a 4mm allen key while adjusting the nut, I found that I had to lubricate the faces of the nut to stop the squeak.
 

ORIGINAL: SteveJC

My 997 is in in the morning to have one of the clear rear wheel arch protectors replaced and to try to resolve a rattle / vibration coming from the passenger side, it sounds like it's around the door area , it sounded really bad yesterday with the noise being a little nearer but still passenger side, found to be my glasses sitting on the passenger seat.
It is far worse in Sport mode and even worse on concrete roads or roads where the tarmac has a heavy stone content, I dread to think what it would sound like if the suspension was switched on as well.
Steve
Click to expand...

I have found also it is far worse on similar road surfaces. Any luck following your visit?

Thanks

Paul
 
Paul
As always the OPC sorted both problems out very efficiently and lent me a nice new 991 for the day.
They informed me it was cabling in the door that had moved and was creating the vibration.
Steve
 
I have an annoying rattle coming from the auto dimming rear view mirror, which I have yet to resolve.[:mad:]
It is amazing how anything left in the glove box or in the door pockets can cause vibration noises ... Such as loose coins in a small tin left in door pocket or empty CD boxes in glovebox.
Shows what a good job Porsche have done not to have rattles everywhere!

 
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