Date:         Sat, 22 May 2010 12:27:03 -0700
Reply-To:     Phil Zimmerman <philzimm1@SHAW.CA>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Phil Zimmerman <philzimm1@SHAW.CA>
Subject:      Re: Strange Auto Trans Behavior
Content-Type: text/plain; charset=US-ASCII; format=flowed

Date:         Sat, 22 May 2010 11:03:25 -0700
From:         BenT Syncro <syncro@GMAIL.COM>

Good morning! ........
Anyway, back to misbehaving Vanagon.. .....
  ......... you will hear a loud whine for several seconds. While the
whine is present, the trans keeps working. After about 10-20 seconds,
whine disappears and so does the functionality of the auto trans. You
can repeat this with the same results each time.
Where do you think that noise is coming from?......
BenT Sent from my torque converter
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BenT- TQ,

noise?
First guess... within the Valve Body.
A  piece of dirt/wear causes one of the balls or valves to stick
partially open/closed.

The part that puzzles me is the repeatability of the "whine" symptom....
Transmission builds up enough pressure to work and whine for 10-20
seconds then stops working.
By 'functionality' do you mean all functions..... 1st, 2nd, 3rd and
reverse each/all work for 10-20 seconds if selected?
Individually select each position on start-up and see if it works....

Are you able to perform a pressure test on the Transmission? see
Bentley 37.17
This may provide information to locate the defective part(s)....

Drop the Transmission Pan and see what's in the filter & pan? If no
clutch-lining or metal fragments....
If the filter is clean..... a good thing.... but the Transmission has
to come out/apart and be inspected...

PZ...... sent from my TQ-iBook
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