Re: A transistorized CV Joint?

[M Connors <mconnor@frontiernet.net>]

Stott,

    Thanks for the E-mail.  No I don't have UFO's fortunately is has been
retrofitted.  When I removed the wheel to start to troubleshoot I noticed a
mild gouge in the rim and a slight nick on the bottom of the caliper.  I didn't
put 2+2 together.  Now it is pretty obvious that is my problem.  I guess with
all the rough icy roads during the snowstorm loosened up one of the caliper
bolts on the wheel.  I recently had service done to that wheel and I suspect
that they failed to use blue loctite on the caliper bolts.  That is something I
will have to check also. I am just thankful as I was thinking it was my going
to be my differential.  Thanks for the feedback as I plan on tackling it over
the weekend.

Best Regards

Mark

"Hare,Stott (X)" wrote:

> Yes I guess a CV joint could lock up like that.  The only time I saw
> something like this was when one of the caliper carrier mounting bolts
> wandered off.  When the car moved forward, the carrier/caliper acted as a
> cam and locked up the wheel.  In reverse everything was fine....  Does your
> car have UFO's??
>
> HTH,
> -S
>
> Stott Hare
> 85 Callaway 4ktq
> 84 4ktq (MC conversion in progress)
>
> -----Original Message-----
> From: M Connors [mailto:mconnor@frontiernet.net]
> Sent: Monday, March 15, 1999 11:14 PM
> To: V8 Quattro List; Quattro List
> Subject: A transistorized CV Joint?
>
> Hi.
>     Picking anyone's brain out there for their thoughts.  Recently my V8
> has started exhibiting strange behaviour when backing up.  What is
> happening is the driver front wheel is locking up. This occurs only in
> reverse and only after the brakes are applied.  So long as I don't touch
> the brakes the car is fine during backup.  The minute I even slightly
> tap the brakes, causes the driver front wheel to completely lock up and
> stay locked (even on dry pavement).  Once this occurs the only way to
> free up the wheel is to place the car in drive and pull ahead.  The
> wheel then resets and is fine again.  It is interesting to note that
> when driving forward and applying the brakes the car is fine.
> Troubleshooting thus far has yielded the following observations:
>
>     1. Front Driver Brake Pads in excellent shape.
>     2. Rotor in excellent shape with no imperfections
>     3. When applying the brakes no pulsating (translation: no warped
> rotors)
>     4. ABS activated/deactivated yields same results
>     5. No brake drag (as far as I can tell)
>     6. Noted inner CV Joint boot torn driver's side(could this be a clue
> ???).
>
> Was wondering could an inner or outer CV Joint exhibit this type of
> locking phenomonon?  It seems that by applying the brakes induces torque
> on the driveshaft which causes something to lock within the driveshaft
> or differential.  It is only on this one wheel?  Has anyone seen or
> heard of a CV Joint lock up in one direction only?   I guess the
> alternative would be my differential? (say it isn't so....)  Any
> thoughts on this subject would be greatly appreciated.  Thanks in
> advance.
>
> Mark