RE: 4kq vibration

[Mark Nelson <mnelson@brls.com>]

Hi James!

I took the tires off and turned out that two of them were down ~ 2
ounces in balance weights.  A quick balance check on all four and
problem solved.  Carter J.'s hunch was correct...  Nice to know that it
wasn't necessary to dig into the driveline...

cya!

-mark nelson


> ----------
> From: 	James Marriott[SMTP:marriott@lesbois.com]
> Sent: 	Sunday, July 20, 1997 10:32 PM
> To: 	Mark Nelson
> Cc: 	Quattro List
> Subject: 	Re: 4kq vibration
> 
> Haudi,
> 
> Mark Nelson wrote:
> > Hi all!
> > 
> > Well, my dad just bought two 4kq's, and we just spent last week
> putting
> > new struts, axles, bearings, tie-rod, ends, etc. on one of them.  My
> dad
> > went and drove it yesterday and found that it starting vibrating
> very
> > badly above 55 mph (the first time either of us has driven it at
> highway
> > speeds).  Up to about 53, it was fine, but after that, the vibration
> was
> > pretty bad.  We're both pretty sure it's the support for the
> driveline
> > to the rear differential and/or one of the joints.  I thought I
> would
> > throw it out to one of you to see if anyone else with a 4kq has
> > experienced this problem.  The more I think about it, the more I am
> > thinking it's somewhere in the driveline/support.  Let me know...
> TIA!
> 
> If it's not a tire, stick the car _securely_ on stands, lock both
> diffs,
> and spin it up. The problem should be easy to spot then. BTDT.
> 
> hth,
> James
> 
> '87 4kq with failed wheel bearing previously found by this method
>