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Saab 9-3 Tid front end noise?

Discussion in 'Motors' started by Phat Momma Hoe, 26 Nov 2017.

  1. Phat Momma Hoe

    Wise Guy

    Joined: 18 Oct 2002

    Posts: 1,676

    I've had my 2007 Saab 9-3 Tid since August and it's suffered with a weird mechanical 'whiring' sound in all that time.

    It almost sounds like a worn baring, I contemplated it being the clutch but having done 4k miles there appears to be no other clutch related issues.

    The mystery noise only happens when in gear (moving, not stationary), however dipping the clutch, rolling in neutral or when applying the brakes the noise vanishes (hence my original guess at clutch or flywheel).

    I'd rather not get a garage to diagnose without a rough idea of the area of interest to keep cost down.

    There is no loss of power
    No overheating
    Fuel efficiency isn't affected
    No obvious adverse effects
    No clutch slip

    It's been driving me bloody crazy as you can hear (and feel it) all the time. Did wonder about the cambelt but no idea how a worn one manifests symptoms

    Help!
     
  2. Big Spender

    Wise Guy

    Joined: 31 Oct 2004

    Posts: 2,317

    120 or 150 bhp engine?
     
  3. Phat Momma Hoe

    Wise Guy

    Joined: 18 Oct 2002

    Posts: 1,676

    150
     
  4. Dangerous Dave

    Mobster

    Joined: 10 Oct 2006

    Posts: 3,339

    If the Sabbs use the M32 gearbox probably the 5/6th bearings are worn. Does it make the noise in every gear ?
     
  5. Phat Momma Hoe

    Wise Guy

    Joined: 18 Oct 2002

    Posts: 1,676

    Yeah every gear, I just wish I had a better way to describe the noise but it reminds me of a worn bearing casing with grit in the bearings (such as on a skateboard for instance)
    It's that kind of noise and feel.
     
  6. Big Spender

    Wise Guy

    Joined: 31 Oct 2004

    Posts: 2,317

    It'll most likely be the F40 which doesnt suffer the same fate but there is a chance it could be the M32.

    See here for the symptoms of M32 failures http://www.wgmotorworks.co.uk/repairs/transmission/m32-gearbox/
     
  7. Phat Momma Hoe

    Wise Guy

    Joined: 18 Oct 2002

    Posts: 1,676

    It is an f40 btw
     
  8. mrgubby

    Soldato

    Joined: 21 Oct 2002

    Posts: 5,253

    Location: 30 miles north of London

    Could be a front wheel bearing.I had one that only I could hear and it went through two MOTs until it actually had some detectable play in it !
     
  9. Phat Momma Hoe

    Wise Guy

    Joined: 18 Oct 2002

    Posts: 1,676

    Can't see it being a wheel bearing as it would be constant rather than only audible when being driven in gear
     
  10. blueboy2001

    Mobster

    Joined: 18 Oct 2002

    Posts: 4,882

    Could be the dual mass flywheel failing, especially if there is some vibration present with it.

    Is the noise proportional to road speed or engine speed, or it is more constant?
     
  11. Phat Momma Hoe

    Wise Guy

    Joined: 18 Oct 2002

    Posts: 1,676

    It's a constant, as in doesn't 'rotate' quicker as I accelerate or really change based on road speed.
    Driving me mad, wondering if it could be belt related (bearing in a pulley or something).
    I do get some engine vibration at about 1800 to 1900 if I mash my foot down, but that's about it. Although I hear that's quite common with these
     
  12. wedrum

    Soldato

    Joined: 11 Aug 2016

    Posts: 5,538

    Location: Cheshire

    dual mass failure or release bearing
     
  13. Phat Momma Hoe

    Wise Guy

    Joined: 18 Oct 2002

    Posts: 1,676

    Can't imagine it's the release bearing as there are no other effects, no clutch slippage, selection issues etc. Gear box/change feels no different than when I got the car months ago.
     
  14. bremen1874

    Capodecina

    Joined: 20 Oct 2008

    Posts: 11,809

    Not saying it is the release bearing, but a noisy release bearing wouldn't cause any other issues.
     
  15. Vita

    Capodecina

    Joined: 26 Mar 2006

    Posts: 11,051

    Location: United Kingdom

    Possible main bearing in box. Sounds similar to what I had in my accord. I'm sure release bearing occurs when clutch is dipped.