User Tag List

Thanks Thanks:  0
Likes Likes:  0
Page 1 of 3 123 LastLast
Results 1 to 10 of 26

Thread: Turbo making a louder whistling noise

  1. #1
    Regular Member
    Join Date
    May 2009
    Location
    Rochford
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    StatsVehicle Info
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Eek Turbo making a louder whistling noise

    Hi.

    My cdti 150's is making a louder whitle/whine sound from cold at about 1300 rpm to 1700rpm. It gradually quietens when it warms up. Sounds a bit like blowing over the top of a bottle/siren sound. Still drives fine and pulls well with no lights on dash.
    I have taken off the aux belt and run it to see if it was still there to eliminate the alternator/AC and drive pulleys. And the noise is still there so it can only be the turbo or poss cam belt tensioner/waterpump. The belt and tensioners and waterpump were changed about 45000 miles ago.

    If it is the turbo should I be worried or can I just carry on driving it? Or is it something I must get sorted immediately. I have found new turbos for sale on ebay for around £480 which I havn't got at the moment.

    I was wondering if there was a possibility of it breaking up and then being drawn into the engine. Or this was a very unlikely outcome and the noise would just slowly get worse and I could just carry on driving it.

    cheers

    Stuart

  2. #2
    Regular Member m8internet's Avatar
    Join Date
    Dec 2006
    Location
    Cumbernauld, Scotland
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    StatsVehicle Info
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Default

    Should be easy enough to trace and confirm if it is the turbo
    Simply raise the bonnet and ask someone to raise the revs very slowly and call out each 250rpm

    You can then try to find out where exactly the noise is coming from, if it is the turbo
    Let the engine cool, then repair or replace the failed hose or pipe

    Very unlikely for a turbo vane to end up in the engine
    More likely to be the other way round and engine debris ending up within the turbo and damaging that

  3. #3
    Regular Member
    Join Date
    May 2009
    Location
    Rochford
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    StatsVehicle Info
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Default

    I have tried having my head under the bonnet with someone raising the revs. It definitely seems to be coming from the front and there appears to be no leaks/splits in the pipes. But as you know sound travels and it is very difficult to pinpoint the exact place. I have looked around the intercooler for any oily marks and that all seems ok. I was thinking it was turbo bearings making the noise and when they warmed up the noise quietened.

  4. #4
    Regular Member Grumpy1954's Avatar
    Join Date
    Mar 2010
    Location
    Newport (Shropshire)
    Post Thanks / Like
    Mentioned
    2 Post(s)
    Tagged
    0 Thread(s)
    StatsVehicle Info
    Post Thanks / Like
    Mentioned
    2 Post(s)
    Tagged
    0 Thread(s)

    Default

    My dad, in the days before computers, used to put a wooden handled screwdriver to different parts of the engine and put his ear to the handle, he reckoned it helped pin it down against the background noise. He knew what he was doing, was a qualified motor fitter, so might be worth a go.

  5. #5
    Regular Member Critch's Avatar
    Join Date
    Dec 2009
    Location
    wirral
    Post Thanks / Like
    Mentioned
    21 Post(s)
    Tagged
    0 Thread(s)
    StatsVehicle Info
    Post Thanks / Like
    Mentioned
    21 Post(s)
    Tagged
    0 Thread(s)

    Default

    Quote Originally Posted by Grumpy1954 View Post
    My dad, in the days before computers, used to put a wooden handled screwdriver to different parts of the engine and put his ear to the handle, he reckoned it helped pin it down against the background noise. He knew what he was doing, was a qualified motor fitter, so might be worth a go.
    Still a very handy trick now mate.

    I've got a stethoscope in my tool box.

    But if I'm on exercise or whatever I use a large screwdriver/ extention bar

  6. #6
    Regular Member
    Join Date
    May 2009
    Location
    Rochford
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    StatsVehicle Info
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Default

    Ok thanks. Didn't think of that. Will try that and see if it helps.

  7. #7
    Regular Member badback's Avatar
    Join Date
    Jan 2009
    Location
    Runcorn
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    StatsVehicle Info
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Default

    Mine whistles for a minute or so when cold. I was told on here that it's normal.

  8. #8
    Regular Member rozzer2006's Avatar
    Join Date
    Jun 2009
    Location
    Glasgow
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    StatsVehicle Info
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Default

    i must agree, ive had my 150 from 6 months old and 12k and its always done that, still does it its a 08 plate and 47k. if it was anything serious either the engine would go kapoot or the engine management would let you know. if your saying it drives fine etc then i wouldn't worry about it. i put a K&N cone filter on it you don't really get induction noise but the turbo noise is imence!! when you lift your foot it sounds like a dump valve also.

    have you just started noticing it mabe??
    Quote Originally Posted by badback View Post
    Mine whistles for a minute or so when cold. I was told on here that it's normal.

  9. #9
    Regular Member rozzer2006's Avatar
    Join Date
    Jun 2009
    Location
    Glasgow
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    StatsVehicle Info
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Default

    bad back, noticed you have the rear LEDs do they show up error messages or do they blink when the igntion is on without the lights?? choking to get them! tryed someting similar with LED strips with the resistors.

    Quote Originally Posted by badback View Post
    Mine whistles for a minute or so when cold. I was told on here that it's normal.

  10. #10
    Regular Member
    Join Date
    May 2009
    Location
    Rochford
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    StatsVehicle Info
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Default

    I've had mine for 3 years and done nearly 70000 miles. But this noise has only been noticeable for the last month or so. Thats why I am a bit concerned.

Page 1 of 3 123 LastLast

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. Engine noise louder than it was before timing belt was replaced
    By the-converter in forum Engine & Drivetrain
    Replies: 2
    Last Post: 14th October 2011, 12:26
  2. whistling noise after fitting turbo back sstem
    By tomo41 in forum Engine & Drivetrain
    Replies: 0
    Last Post: 17th August 2011, 22:52
  3. My Turbo seems louder..... I think :-(
    By blues n twos in forum Vectra C / Signum Car Chat
    Replies: 9
    Last Post: 1st July 2010, 20:09
  4. Making a louder turbo??
    By smiley-sri in forum Diesel Engine related
    Replies: 15
    Last Post: 2nd September 2009, 13:43
  5. whistling noise
    By fizler316 in forum Vectra C / Signum Car Chat
    Replies: 22
    Last Post: 17th May 2009, 16:22

Visitors found this page by searching for:

Nobody landed on this page from a search engine, yet!

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •