Torque Cars

530d e60 2004 very faint siren type sound only at very low revs

Discussion in '5 Series' started by biggurs, 3 March 2013.

  1. biggurs

    biggurs Newbie

    Messages:
    2
    From:
    midlands
    Car:
    bmw 530d SE
    Hi all
    I have recently noticed a very faint siren/whining type of sound but only on very low revs at extremely light acceleration and when the pedal is released the sound is in reverse just like a siren.
    Its not the turbo. ... well I dont think it is because the turbo only boosts about 2.5k revs which when it does it has its own distinctive sound since I removed my silencer.
    It only occurs at the lowest possible revs 1-1.5k.
    The other thing I noticed it doesn't occur when the car is stationary but only when it is in motion.

    Even then when the turbo does boost down, a second or two later the faint siren type of sound can be heard. Its as if I have 2 turbos... one for very low revs and one for higher revs as in the 535d.... only I dont.
    No codes showing on inpa diagnostics
    Drives beautifully even at 160k miles! !!
    I would be very grateful for any suggestions
    Thanks
     
    Last edited: 3 March 2013
  2. biggurs

    biggurs Newbie

    Messages:
    2
    From:
    midlands
    Car:
    bmw 530d SE
    530d, siren, whining, low revs
     
  3. T9 man

    T9 man TC Pro Founder Moderator

    Messages:
    20,369
    From:
    London, UK
    Car:
    Saab 9-3SS T9
    Greetings and a Warm Welcome to our TorqueCars Forum my Friend! :)

    I am unable to help you with your question directly, but hopefully somebody can point you in the right direction for the knowledge that you seek!

    Good luck buddy! :)
     
Loading...
Similar Threads - 530d 2004 very
  1. amero
    Replies:
    3
    Views:
    1,244

Share This Page

Click Here
  1. This site, like pretty much every other site, uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
    By continuing to use this site, you are agreeing to our use of cookies, this may include third party cookies from our carefully selected advertising partners and for our analytics which allow us to see which pages are of interest and improve our site navigation and experience.
    You can disable cookies in your browser but this may affect your experience on this website.

    Dismiss Notice