Interesting low speed vibration, 5KQ and 5KTQ

[Mark J. Besso]

Is there anything you can do at that speed that makes it NOT happen? 
(steering, braking, clutch-in, etc.)

Is it under braking as well as acceleration?  Is the vibration felt 
throughout the vehicle or just in the steering wheel?  Is there any noise 
associated with the vibration?

Any chance one of the wheels isn't properly tightened?  If so, I pray you 
check BEFORE the next road test!

~Mark



On Wed, 28 May 2008 14:47:27 -0700
  "john at westcoastgarage.net" <john at westcoastgarage.net> wrote:

  A new one to me, 86 5KTQ has a low speed vibration, feels like a
  driveshaft U-joint when leaving from a stop.  Throttle position isn't a
  factor, only speed.  After about 20 MPH, the vibration is gone. Doesn't
  matter whether you start out in first or second gear. I thought maybe
  we'd disturbed something when we did the clutch, but a phone call from
  another customer yesterday is making me rethink that conclusion.  In his
  87 5KQ, the vibration appeared 7 years after the clutch job, leading me
  to believe it may not be related.  The driveshaft guy says it's not a
  normal symptom of a driveshaft failure, but these aren't something with
  which they deal with any real frequency.  Any hints/questions/BTDTs out
  there that might help me solve this problem?  Lotsa miles on both cars, 
BTW.
  
  TIA, John
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