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Just a quick question

Discussion in 'Motors' started by Enfield, 12 Jul 2006.

  1. Enfield

    Soldato

    Joined: 8 Nov 2003

    Posts: 7,401

    Location: Hampshire

    Alright fellas

    Yesterday I went to my mates house to get him to fit my new brake discs and pads, (standard - boring I know).

    When I started up the car with one side jacked up the hub was spinning round and got faster when I revved it...before you ask, yeah it was in neutral :p

    My mate says it's gearbox drag? Something to do with minging gearbox oil.

    The CV joints also need changing sometime in the near future...could they have something to do with the above problem? Would I need to replace the entire driveshaft is a CV joint a separate part?

    Thanks for reading. :)
     
  2. lozza23_uk

    Wise Guy

    Joined: 23 Jan 2006

    Posts: 1,536

    to do with the gearbox oil. i would suggest the following.

    1. DONT REV A CAR WHILST ON AXLE STANDS.

    2. if you can find a car that doesnt do as you stated I would be amazed really.

    3. nothing to do with cv joints.

    4. your gearbox oil is probably fine. but if there is loads and loads of spinning probably time it is changed.

    although I am happy to be corrected on all the above, after all I am not a professional.
     
  3. Enfield

    Soldato

    Joined: 8 Nov 2003

    Posts: 7,401

    Location: Hampshire

    Anyone else?
     
  4. Nozzer

    Banned

    Joined: 17 Oct 2002

    Posts: 9,495

    Location: Sunny South-East

    All that sounds like common sense to me too, but I'm useless at car mechanics.
     
  5. BillytheImpaler

    Man of Honour

    Joined: 2 Aug 2005

    Posts: 8,741

    Location: Cleveland, Ohio, USA

    I've never heard of gearbox drag but I suppose it's possible in some way depending on the construction of the transmission. I don't see any way worn CV joints could be influencing this.

    Lozza is right, though, revving it whilst on jack stands is asking for trouble. Jacks aren't usually the most stable of things and all that jiggling about from the engine's vibrations could rattle the car loose. A wheel spinning at 50 mph that suddenly hits the ground is going to cause some problems, especially if there's anybody underneath.

    Does the wheel spin when the clutch is pushed in or just when the gear select is in neutral?
     
  6. Acolyte

    Mobster

    Joined: 18 Oct 2002

    Posts: 3,779

    Location: Bristol

    Its fine, my car does it and a few other cars i know do it. I have been told its perfectly normal.