You probably have a bad CV joint somewhere.  The first time I came across
this it drove me crazy.  Syncro's do not always give the typical thunking
noises when the joints go bad.

Dennis
-----Original Message-----
From: David Marshall (Vanagon Mailing List) <vanagon@VOLKSWAGEN.ORG>
To: Vanagon@GERRY.SDSC.EDU <Vanagon@GERRY.SDSC.EDU>
Date: Saturday, November 29, 1997 8:30 PM
Subject: Syncro Acceleration Vibration problem

>Over the past few months I have noticed a vibration under heavy(ish)
>acceration or load in my Syncro Double Cab.  The noise seems to be coming
>from somewhere below me when I am going up a steep hill where I have to
>gear down in to third to maintain any sort of speed.  If I ease off of the
>accerator the noise goes away.  This same vibration also occurs when I
>accerate quickly from a stop in all gears.  It is always the same RPM range
>that it occurs.  I assume somewhere between 2000 and 3500 (no tach I can't
>tell exactly).
>
>I put castrol 70w90 synthetic gear oil in both the front and rear boxes
>this helped shifting but there is still the same vibration (still a little
>occasional grinding in 1st to 2nd).  Other things that I checked were tire
>pressure and ballance and loose trim pieces.... still no luck  :(
>
>Any idea what the problem is?
>
>Thanks in advance!
>
>
>-- David Marshall        Email: david@volkswagen.org --
>-- 80 VW 2.0L Caddy,            87 Audi 5000 quattro --
>-- 85 VW Cabrio, 88 VW Double Cab Syncro Transporter --
>-- Volkswagen Homepage http://www.volkswagen.org     --
>-- VW Caddy Homepage http://www.volkswagen.org/caddy --
>--         ***SENT VIA VANAGON MAILING LIST***       --
>