[Vwdiesel] Front end bearing noise (again)

[mikitka]

I have been out of the loop on this one. I'm sure this has been covered but
since all the bearings are good, alignment is good, are the tires in good
shape? Could it be tire noise? Change tire pressure and see if the sound
changes any.
Nick 




This is patently unsafe.
Never drive around the parking lot with someone on the hood unless they have
been anchored firmly with duct tape.

I expect a few holes with a hole saw should let you use the pipe.  :-))

Seriously, I would look at the lower control arm rubber bushings.  I wonder
if one is bad, and flex is allowing metal to metal transmission of normal
bearing noise, which would then be much louder than normal.
-James

-----Original Message-----
From: vwdiesel-bounces at vwfans.com [mailto:vwdiesel-bounces at vwfans.com]On
Behalf Of Val Christian
Sent: Saturday, November 05, 2005 6:51 PM
To: mark at shepher.fsnet.co.uk; vwdiesel at vwfans.com
Subject: Re: [Vwdiesel] Front end bearing noise (again)


Mark,

I'm at a loss as to what to put a pipe on, with a FWD bearing,
where it seems everything is moving.  The noise gets significant
at 40 mph.  Time for bluetooth car diagnostic microphones!

At the moment, I'm thinking of running down the road at 70 mph,
and stopping without breaking.  Then taking a passive IR therometer/
radiometer, and measuring the hub temperature.  My concern is that
there are other factors which could have a greater error contribution
than the heat of a failing bearing.  Slightly dragging pad, etc.

Val



>
> Val
> Try using a piece of pipe as a stethoscope dangling it near various points
> when driving...
> Or if thenoise appears at aslow pace thendrive rounda parking lot with
> someone sitting on engine bay!
> MTM
> ----- Original Message -----
> From: Val Christian <val at mongobird.com>
> To: <vwdiesel at vwfans.com>
> Sent: Saturday, November 05, 2005 9:47 PM
> Subject: [Vwdiesel] Front end bearing noise (again)
>
>
> > Gang,
> >
> > To revisit:  Wheel bearing noise, increases in intensity with loading of
> > right side.
> >
> > -Replaced right side front bearing.  Noise persists.
> >
> > -Pulled both rear bearings, and inspected, looking for race fretting.
> > All rear bearings look very clean.
> >
> > -Checked all wheels for play.  No excessive play observed.
> >
> > The noise is getting a little louder, and continues to disappear
> > if the left side gets loaded, and come in strong if the right
> > side is loaded.  No signs of driveshaft/CV involvement.
> >
> > Anyone ever see a situation where the bearing that gets unloaded
> > makes the noise?
> >
> > Still stumped, but eventually something will fail and become obvious.
> > Any more ideas?
> >
> > Thanks.
> >
> > Val
> >
> >
> > ps: Not my car, but it could be given how much time it's spending here
> > while I find the whine.
> >
> > _______________________________________________
> > Vwdiesel mailing list
> > Vwdiesel at vwfans.com
> > http://www.audifans.com/mailman/listinfo/vwdiesel
> >
>
>
>

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