Front-End shudders when starting off ('84 QV) | FerrariChat
Buy

Front-End shudders when starting off ('84 QV)

Discussion in '308/328' started by JazzyJay, Jul 10, 2017.

This site may earn a commission from merchant affiliate links, including eBay, Amazon, Skimlinks, and others.

  1. JazzyJay

    JazzyJay Formula Junior

    Oct 26, 2005
    367
    Connecticut
    #1 JazzyJay, Jul 10, 2017
    So my otherwise great running car has an annoying new issue. When starting from a full stop, and with the wheel turned slightly in one direction, there is a slight shudder (in the front end?) for a second or two. This is new.

    Everything else is great. The steering and suspension are fine at full speed, whether going straight or turning corners. There is no other sign of anything wrong. The shudder is only present from a complete stop AND with a slight turn of the wheel.

    I looked for anything obvious, such as a badly warn bushing or something loose or damaged that may be rubbing on the front end when the wheels are turned. The front wheel bearings seem ok.

    The only work done to the car recently was new CV boots on the rear axles. I did not notice any shudder the first several times driving the car with the new boots, so I assume (????) this new problem is not related to changing the boots.

    Has anyone experienced this before?
     
  2. tatcat

    tatcat F1 World Champ
    Owner Silver Subscribed

    Sep 3, 2001
    11,013
    panama city beach FL
    Full Name:
    rick c
    #2 tatcat, Jul 10, 2017
    Caliper dragging?
     
  3. JazzyJay

    JazzyJay Formula Junior

    Oct 26, 2005
    367
    Connecticut
    #3 JazzyJay, Jul 10, 2017
    Last edited: Jul 10, 2017
    Hmmmmmm......interesting. Hadn't though of that.
     
  4. thorn

    thorn F1 Rookie
    Silver Subscribed

    Aug 7, 2012
    3,324
    Tallahassee, FL
    #4 thorn, Jul 10, 2017
    Check that the rotors aren't warped, as well.
     
  5. johnk...

    johnk... F1 World Champ
    Owner

    Jun 11, 2004
    11,247
    CT
    Full Name:
    John Kreskovsky
    #5 johnk..., Jul 10, 2017
    Unlikely to be warped rotors as you would feel a pulsing in the brake pedal any time you applied the brakes. Could be chatter in the limited slip clutches. Have you changed the gear box fluid lately? Might need to add some posi-quiet.
     
  6. thorn

    thorn F1 Rookie
    Silver Subscribed

    Aug 7, 2012
    3,324
    Tallahassee, FL
    #6 thorn, Jul 10, 2017
    Last edited: Jul 10, 2017
    Is it the steering wheel shuddering (rapid back/forth turning motions), or the entire car?

    You mentioned you think it might be in the front, but wondering how it actually feels and manifests itself in the (overall) car's behavior.
     
  7. tinterow

    tinterow Formula 3

    Nov 1, 2014
    1,339
    Houston, Tx
    Full Name:
    Chaya Tinterow
    #7 tinterow, Jul 10, 2017
    Be careful John! The clutch patrol will admonish you for suggesting adding anything to the transmission...and whatever you do, don't buy it at Autozone! Hehehe :)
     
  8. JazzyJay

    JazzyJay Formula Junior

    Oct 26, 2005
    367
    Connecticut
    #8 JazzyJay, Jul 10, 2017
    It is barely (if at all) noticeable in the steering wheel (not like the steering wheel vibrates or fights me). It feels like the front wheels are rolling over some shallow bumps in the road (enough to notice, but not enough the shake the wheel or the car). Hard to describe. I suppose it is possible to be something going on in the rear end, but just doesn't "feel" like it.

    Sorry to be vaugue...I drive it tomorrow and see if I can come up with more details.
     
  9. johnhunt

    johnhunt Formula Junior

    Aug 9, 2013
    343
    Washington
    Full Name:
    John Hunt
    #9 johnhunt, Jul 11, 2017
    Flat spotted tire?
    Failing tie rod?
    Something in the wheel well (stick or wire).


    Sent from my iPhone using Tapatalk
     
  10. Ferraridoc

    Ferraridoc F1 World Champ
    Owner Silver Subscribed

    Jun 20, 2012
    17,228
    Gold Coast, Aust.
    Full Name:
    Patrick
    #10 Ferraridoc, Jul 11, 2017
    Change the gearbox oil
     
  11. johnk...

    johnk... F1 World Champ
    Owner

    Jun 11, 2004
    11,247
    CT
    Full Name:
    John Kreskovsky
    #11 johnk..., Jul 11, 2017
    Well, when serviced by the dealer they always added 8 oz of posi-quiet to the transaxil. I continued to do the same. It's worked ok for the last 32 years. But I've always be a rebel. :)
     
  12. JazzyJay

    JazzyJay Formula Junior

    Oct 26, 2005
    367
    Connecticut
    #12 JazzyJay, Jul 11, 2017
    What is the logic behind the gearbox oil?
     

Share This Page