Low speed vibration under acceleration

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  • Falconer
    Advanced Member
    • Mar 2011
    • 156

    #1

    Low speed vibration under acceleration

    So I had this bad vibration at all speeds. I rebuilt and installed a new driveshaft, along with a new CSB, guibo, tranny and engine mounts. This solved my high speed vibrations and drivetrain clunks. However, I still have this vibration pretty much in first gear while accelerating. It's definitely a chassis vibration. Should I be looking at RTABs and sub-frame bushings now? I don't get any tramlining though. Not sure where to start. Wheels and tierods are known to be good.
    1981 320is, Alpine White, 5 speed (Sold)
    1992 318is, Brillantrot, 5 speed (Sold)
    1996 328i, Montreal Blau, 5 speed (Sold)
    1991 325i Coupe, Alpine White II, 5 speed (Current)
  • mr ilia
    E30 Addict
    • May 2011
    • 582

    #2
    Is steering shaking? If so, look into contril arm bushings.

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    • singh336
      Banned
      • Dec 2010
      • 211

      #3
      im gonna say its 90% likely your subframe bushings in the rear...

      mine are SHOT... and after beating the hell out of the car its now shuddering under heavier acceleration, probably driveshaft wobble because the subframe is moving.

      check your bushings in the rear, i dont think the RTABS would do it, but definitely the subframe bushings.

      Comment

      • yeaseth
        Grease Monkey
        • Jul 2011
        • 302

        #4
        yea I would say its bushing related
        sigpic
        benvideoproductions.com
        http://www.youtube.com/watch?v=617yNrOrRfo&

        Comment

        • singh336
          Banned
          • Dec 2010
          • 211

          #5
          Just an update, went to replace my bushigngs and saw that a lost a bolt and nut off the guibo near the tranny.... I guess they weren't tight enough from the swap.

          That was obviously the cause of my vibrations , but regardless the bushings were torn up badly so I'm sure that didnt help either.

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