Omega Owners Forum

Please login or register.

Login with username, password and session length
Advanced search  

News:

Please play nicely.  No one wants to listen/read a keyboard warriors rants....

Pages: [1] 2  All   Go Down

Author Topic: Whistling noise under hard acceleration  (Read 2260 times)

0 Members and 2 Guests are viewing this topic.

VR4Dave

  • Intermediate Member
  • ***
  • Offline Offline
  • Gender: Male
  • Lincoln
  • Posts: 274
    • View Profile
Whistling noise under hard acceleration
« on: 13 June 2011, 17:51:25 »
As above really when hoofing it in sport mode get a whistling noise at top of the revs, noise seems to come from the front of the car.
Definately more of a whislte than a screach.
02 2.6 elite.
Any ideas?

TIA
Logged

TheBoy

  • Administrator
  • *****
  • Offline Offline
  • Gender: Male
  • Brackley, Northants
  • Posts: 107026
  • I Like Lockdown
    • Whatever Starts
    • View Profile
Re: Whistling noise under hard acceleration
« Reply #1 on: 13 June 2011, 18:41:19 »
Air leak?
Logged
Grumpy old man

VR4Dave

  • Intermediate Member
  • ***
  • Offline Offline
  • Gender: Male
  • Lincoln
  • Posts: 274
    • View Profile
Re: Whistling noise under hard acceleration
« Reply #2 on: 13 June 2011, 19:50:18 »
That's exactly what it sounds like, any ideas where to start looking? only does it at the top end of the rev range.
Logged

Broomies Mate

  • Omega Baron
  • *****
  • Offline Offline
  • Gender: Male
  • Bristol, UK
  • Posts: 3840
    • Stuff!
    • View Profile
Re: Whistling noise under hard acceleration
« Reply #3 on: 13 June 2011, 19:57:07 »
My first thought was an Air Leak, but would that not throw a fault code and EML?
Logged
2004 Saab 9-5 Aero Merlot Red Stg1 noobtune
2009 Saab 9-5 Turbo Edition Titan Grey Stg3 noobtune
2017 Vauxhall Vivaro L1H1 125PS Star Silver

TheBoy

  • Administrator
  • *****
  • Offline Offline
  • Gender: Male
  • Brackley, Northants
  • Posts: 107026
  • I Like Lockdown
    • Whatever Starts
    • View Profile
Re: Whistling noise under hard acceleration
« Reply #4 on: 13 June 2011, 20:32:25 »
plenum o-rings, bagpipes, icv pipework. anywhere really ;D
Logged
Grumpy old man

VR4Dave

  • Intermediate Member
  • ***
  • Offline Offline
  • Gender: Male
  • Lincoln
  • Posts: 274
    • View Profile
Re: Whistling noise under hard acceleration
« Reply #5 on: 13 June 2011, 21:11:42 »
No codes showing, will be having the plenum off for cam cover gaskets / breather work shortly so will have a good rumage. Ta for suggestions.
Logged

VR4Dave

  • Intermediate Member
  • ***
  • Offline Offline
  • Gender: Male
  • Lincoln
  • Posts: 274
    • View Profile
Re: Whistling noise under hard acceleration
« Reply #6 on: 14 June 2011, 13:56:52 »
car in bits now ready for cam cover gaskets due in on thur. When i took plenum off the really small pipe with a 90 deg rubber on the end under throttle bodies was detatched. Wonder if that was the cause of the whistle.
Will no doubt find out on friday when it's all back together.
Logged

MutantCav

  • Omega Baron
  • *****
  • Offline Offline
  • Gender: Male
  • Gainsborough
  • Posts: 2716
  • Smoke me a kipper - I'll be back for Breakfast
    • View Profile
    • Free Giffgaff Sim With £5 Free Credit
Re: Whistling noise under hard acceleration
« Reply #7 on: 14 June 2011, 15:59:43 »
Check the little rubber o-ring with the little loop on which seals the long airbox on the plenum where it plugs into the plenum...the loop part often splits...some light grease will help the new one not to split when putting it back...only a couple of quid from Vaux to replace :y
Logged
http://giffgaff.com/orders/affiliate/tvpromo Get a free giffgaff sim running on O2 network
£5 free credit on first top-up
£5 gives you 60 mins, 300 texts & unltd calls and texts to anyone else on giffgaff

ninjapirate

  • Senior Member
  • ****
  • Offline Offline
  • Gender: Male
  • dummer. hants.
  • Posts: 620
    • View Profile
Re: Whistling noise under hard acceleration
« Reply #8 on: 14 June 2011, 16:18:29 »
obviously elves have sneaked in and fitted a turbo, i cant understand why no-ones thought of this, and im no mechanic.
Logged

VR4Dave

  • Intermediate Member
  • ***
  • Offline Offline
  • Gender: Male
  • Lincoln
  • Posts: 274
    • View Profile
Re: Whistling noise under hard acceleration
« Reply #9 on: 14 June 2011, 21:11:12 »
ummmmmm turbo mig  8-)
Logged

feeutfo

  • Guest
Re: Whistling noise under hard acceleration
« Reply #10 on: 14 June 2011, 21:18:11 »
What sort if whistle? Kettle whistle? Wizzing whistle? Wheezy whistle?
Logged

VR4Dave

  • Intermediate Member
  • ***
  • Offline Offline
  • Gender: Male
  • Lincoln
  • Posts: 274
    • View Profile
Re: Whistling noise under hard acceleration
« Reply #11 on: 14 June 2011, 22:05:25 »
as much as the turbo thing was a joke it did actually sound like a turbo spooling up. If i had to choose from your descriptions i'd go for kettle. Sounds like wind noise but definately not as it was not present unless gunning it in sport mode.
Logged

Debs.

  • Guest
Re: Whistling noise under hard acceleration
« Reply #12 on: 14 June 2011, 22:49:59 »
The dual-ram system kicks in at specific rpm/torque-loading.......might the marked-change in sound/roar of that, be what you`re hearing (at least in part)? :-/
Logged

MutantCav

  • Omega Baron
  • *****
  • Offline Offline
  • Gender: Male
  • Gainsborough
  • Posts: 2716
  • Smoke me a kipper - I'll be back for Breakfast
    • View Profile
    • Free Giffgaff Sim With £5 Free Credit
Re: Whistling noise under hard acceleration
« Reply #13 on: 14 June 2011, 23:01:14 »
On the above theory could the non connected pipe be to the multiram and as its not connected you can hear it leaking air when it cuts in?
Logged
http://giffgaff.com/orders/affiliate/tvpromo Get a free giffgaff sim running on O2 network
£5 free credit on first top-up
£5 gives you 60 mins, 300 texts & unltd calls and texts to anyone else on giffgaff

feeutfo

  • Guest
Re: Whistling noise under hard acceleration
« Reply #14 on: 14 June 2011, 23:43:48 »
It would be flat as a pancake though, until 4 k or vice versa depending which one.

Logged
Pages: [1] 2  All   Go Up
« previous next »
 

Page created in 0.009 seconds with 17 queries.