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Model specific boards => Golf mk3 => Topic started by: senninha1981 on 17 September 2011, 18:06

Title: bad metal sounding vibration in high revs
Post by: senninha1981 on 17 September 2011, 18:06

I have a metal vibration/buzzing sound over the 4200rpm mark,
I have had a good lock underneath all heatshields are sucure and no vibrations and nothing else seems a miss.
Its sort of under the rear seats underneath the car where its coming from.
Any ideas :undecided:
I thought it might of been the fuel pump as its sort of a metallicy sort of buzzing sound?

Title: Re: bad metal sounding vibration in high revs
Post by: gasketface on 17 September 2011, 18:10

Could be many things but does the rear mounting for the centre section of the exhaust hit the brace ?.I mean the one towards the rear of the car that has two rubbers on it ?.Check the rubbers.

Title: Re: bad metal sounding vibration in high revs
Post by: senninha1981 on 17 September 2011, 18:35

no all is fine in that department

Title: Re: bad metal sounding vibration in high revs
Post by: tshirt2k on 17 September 2011, 18:45

Are you sure you're not confusing it with pinking? Or detonation

Title: Re: bad metal sounding vibration in high revs
Post by: stainesy on 17 September 2011, 18:49

Quote from: tshirt2k on 17 September 2011, 18:45

Are you sure you're not confusing it with pinking? Or detonation

what is pinking?

Title: Re: bad metal sounding vibration in high revs
Post by: gasketface on 17 September 2011, 19:04

http://www.golfgtiforum.co.uk/index.php?topic=205162.msg1908804#msg1908804

Title: Re: bad metal sounding vibration in high revs
Post by: senninha1981 on 17 September 2011, 19:20

Quote from: tshirt2k on 17 September 2011, 18:45

Are you sure you're not confusing it with pinking? Or detonation

No coming from the back under the seat area

Title: Re: bad metal sounding vibration in high revs
Post by: senninha1981 on 17 September 2011, 19:22

could it be the fuel pump being under load at certain rpm making it sound a metalicy rattle, do they have problems?

Title: Re: bad metal sounding vibration in high revs
Post by: tshirt2k on 17 September 2011, 22:12

Probably a heat shield.

Title: Re: bad metal sounding vibration in high revs
Post by: gasketface on 17 September 2011, 22:16

Check your heatshield above your backbox.It's held on by round retainer thingies (  :smiley: ) that corrode and fall off (as one of mine recently did).They are used widely on VW's,it's the same part that holds the plastic power steering pump/belt cover on.

Title: Re: bad metal sounding vibration in high revs
Post by: Wayne on 17 September 2011, 23:26

Is your exhaust clearing the beam all ok.