I was having similar sounding noises on turns R & L from back there and it turned out to be torn motor mount on R side. I have diesel mounts on my TIICO. The mechanic looked under the van while I very slowly started from full-stop, turned hard L & R and notice the motor raising on the R side. The noise was a rubbing/buzzing sort of noise because some of the sheetmetal was coming in contact with stuff it normally doesn't until the engine tips up, and vibrated .... voila .... the noise.
You could probably have anyone kneel down back there and put your e-brake on hard, and while in gear, slowly let the clutch out and have them look to see if the side of the engine raises up and the mount on that side "releases". Mine had a barely noticeable crack in it between the rubber and sheetmetal it's bonded to. Hard to see while the engine was static, but visible once you knew it was cracked.
Bob
'87 Syncro Westy > Very intermittently, after coming to a complete stop then turning left and accelerating, my Vanagon sometimes makes a kinda scratchy buzzy noise. Sounds like it is coming from the right rear, almost like a tire is rubbing on something..As soon as the direction of travel is straightened out, the sound goes...The sound has come about 5 times over a month or so. The interval between episodes is not increasing..Totally random times, though twice it has come at the same corner..which is on my way anywhere...
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