New octavia estate trunk vibrations/resonance

brunca · 22-07-2007, 08:03

After having my new octavia estate for about 4 months now I started noticing a rather annoying resonance noise coming from the trunk. This resonance occurs at higher speeds and particularly on roads with good but coarse surface. While sitting at the back yesterday I found the resonance goes away if I press down with my hands on the side trunk window sills (i.e. the parts underneath the side trunk windows with long narrow grills in them). Has anyone seen/heard about a similar problem? Should I go to the dealer with it or should try to investigate more? (My wife does not hear it and thinks I'm paranoid.)

Thanks in advance for comments,

Ben

vRSLen · 22-07-2007, 08:35

I drive a combi and do not have the resonance issue. At least you know where its
coming from and can fix it

Toneboy · 22-07-2007, 10:39

I can not say I have ever noticed this problem, but then the first thing I did was fill the two side cubby holes with various bits and pieces, plus there is an elasticated expanding strap stopping a box crate sliding about.

Have you tried putting anything in the side storage areas as it could be that your booming is coming from those?

brunca · 22-07-2007, 12:21

Quote:

Originally Posted by Toneboy

I can not say I have ever noticed this problem, but then the first thing I did was fill the two side cubby holes with various bits and pieces, plus there is an elasticated expanding strap stopping a box crate sliding about.

Have you tried putting anything in the side storage areas as it could be that your booming is coming from those?

Tried with the cubby holes both full and empty, no difference. Goes away when I dampen the resonance by pressing firmly on both trunk side window sills...

gadgetman · 22-07-2007, 18:23

Badly set rears?

What wheels/allys and tyres?

Toneboy · 23-07-2007, 10:18

Right try putting a couple of elasticated bungee straps from one side anchor hook to the other side and this will have the effect of tensioning those side panels you are pressing down on.

That should remove any variation of those side panels, so if you still get your noise then it must be coming from another source.

This like this are usually a case of going thru a process of elimination until you isolate the source and sometimes those sources can be very bizarre.

brunca · 23-07-2007, 20:45

Quote:

Originally Posted by gadgetman

Badly set rears?

What wheels/allys and tyres?

Sirius alloy wheels with Continental SportContact 2 205/55 R16 91V

vRSLen · 23-07-2007, 21:42

Something must be causing the vibration in the rear. I would check the wheel balance first

22-07-2007, 08:03	#1
brunca Briskodian Join Date: Jan 2007 Posts: 4 Members Car: Thanks: 0 Thanked 0 Times in 0 Posts	New octavia estate trunk vibrations/resonance After having my new octavia estate for about 4 months now I started noticing a rather annoying resonance noise coming from the trunk. This resonance occurs at higher speeds and particularly on roads with good but coarse surface. While sitting at the back yesterday I found the resonance goes away if I press down with my hands on the side trunk window sills (i.e. the parts underneath the side trunk windows with long narrow grills in them). Has anyone seen/heard about a similar problem? Should I go to the dealer with it or should try to investigate more? (My wife does not hear it and thinks I'm paranoid.) Thanks in advance for comments, Ben

22-07-2007, 08:35	#2
vRSLen Briskodian Join Date: Jan 2006 Location: West Yorkshire Posts: 5,421 Members Car: MK11 Octavia vRS Thanks: 169 Thanked 198 Times in 143 Posts	Re: New octavia estate trunk vibrations/resonance I drive a combi and do not have the resonance issue. At least you know where its coming from and can fix it __________________ Current car: Black MKII Octavia vRS Combi Previous: Black MKI Octavia vRS Combi Black Fabia Elegance 100 BHP

22-07-2007, 10:39	#3
Toneboy Briskodian Join Date: Jan 2006 Location: South West UK Posts: 243 Members Car: Thanks: 0 Thanked 4 Times in 4 Posts	Re: New octavia estate trunk vibrations/resonance I can not say I have ever noticed this problem, but then the first thing I did was fill the two side cubby holes with various bits and pieces, plus there is an elasticated expanding strap stopping a box crate sliding about. Have you tried putting anything in the side storage areas as it could be that your booming is coming from those?

22-07-2007, 18:23	#5
gadgetman Go Gadget Octy! Join Date: Apr 2007 Posts: 3,387 Members Car: Thanks: 219 Thanked 117 Times in 110 Posts	Re: New octavia estate trunk vibrations/resonance Badly set rears? What wheels/allys and tyres? __________________ Lick the window of life Why not join the Briskoda Last.fm group?

23-07-2007, 10:18	#6
Toneboy Briskodian Join Date: Jan 2006 Location: South West UK Posts: 243 Members Car: Thanks: 0 Thanked 4 Times in 4 Posts	Re: New octavia estate trunk vibrations/resonance Right try putting a couple of elasticated bungee straps from one side anchor hook to the other side and this will have the effect of tensioning those side panels you are pressing down on. That should remove any variation of those side panels, so if you still get your noise then it must be coming from another source. This like this are usually a case of going thru a process of elimination until you isolate the source and sometimes those sources can be very bizarre.

23-07-2007, 21:42	#8
vRSLen Briskodian Join Date: Jan 2006 Location: West Yorkshire Posts: 5,421 Members Car: MK11 Octavia vRS Thanks: 169 Thanked 198 Times in 143 Posts	Re: New octavia estate trunk vibrations/resonance Something must be causing the vibration in the rear. I would check the wheel balance first __________________ Current car: Black MKII Octavia vRS Combi Previous: Black MKI Octavia vRS Combi Black Fabia Elegance 100 BHP

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