You have the infamous cracked 3-4 slider hub. Time for rebuild.

Dennis

-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of
David Cohen
Sent: Monday, October 12, 2009 6:01 PM
To: vanagon@GERRY.VANAGON.COM
Subject: Vanagon tranny question regarding 3rd gear grind on manual tranny

Hi,
  I recently purchased a 1990 Vanagon GL with manual  transmission.  Around
town and before the van heats up I can shift up and  down to third without
grinding but as soon as I drive on the freeway for any  amount of time and
then downshift or up shift into third it grinds.  I  assume it's because of
the heating up and thinning of the gear oil and a bad 3rd  gear syncro.  Is
this correct?  I assume I am looking at a full  rebuild or replace with a
rebuilt 4spd tranny.  Your help is  appreciated.

Thanks,
David (new owner of Vanagon and love it)