Date: Sun, 12 Sep 2010 22:58:33 -0400
Reply-To: Dennis Haynes <d23haynes57@HOTMAIL.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Dennis Haynes <d23haynes57@HOTMAIL.COM>
Subject: Re: semi-urgent auto transmission question, update
In-Reply-To: <4c8ce789.1238640a.1966.ffffe942@mx.google.com>
Content-Type: text/plain; charset="US-ASCII"
I'm thinking crack or tear in the forward clutch piston. Even new they can
fail. Will it work if you do not use reverse first? Could be the reverse
piston was replaced with an incorrect one, no bleed valve. This can make
reverse say engaged after it is de-selected. Simple test, can the van roll
while you attempt to use "drive"?
Dennis
-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of
Edward Maglott
Sent: Sunday, September 12, 2010 10:45 AM
To: vanagon@GERRY.VANAGON.COM
Subject: semi-urgent auto transmission question, update
Testing this morning after overnight about 60 degrees outside. Start it up
and it will immediately engage reverse but nothing happens when shifting
into D, 2 or 1. Let it idle in P and tried D every 30 seconds. At 2 and a
half minutes it engaged D, and immediately drove fine. It does seem like a
valve or something is sticking when cold and once it starts moving it works
properly.
Edward
>-----Original Message-----
>From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf
>Of Edward Maglott
>Sent: Saturday, September 11, 2010 10:40 AM
>To: vanagon@GERRY.VANAGON.COM
>Subject: semi-urgent auto transmission question
>
>Got my 86 van back a week or so ago after a transmission rebuild that
>has been a saga. I will cover that in more detail at some point. The
>short version is that the rebuilder had the van twice, and for a long
>time both times.
>
>When I got it back a week ago the trans was working better than I've
>ever experienced in a vanagon. But then I've only had basically worn
>out transmissions in mine. So over the 100 miles or so I've driven it
>since I got it back, it has developed a problem when cold. Today I
>start the van, let it idle about a minute and back up my driveway,
>which is uphill. Fine. Put it in D and hear/feel nothing. Step on
>the gas and it revs freely up to about 2500 then the van takes off with
>a thud. For about the first block, it felt like it was maybe slipping
>or was in 2nd gear instead of 1st. After that it drove normally, but
>the shift points seemed a little lower than before.
>
>I think this symptom has to do with the trans not properly developing
>pressure when cold? I've had the slipping in R when cold symptom
>before this rebuild so I'm a little surprised it went up the driveway
>so well in R and then didn't engage D.
>
>Checking the fluid level, it seems a tiny bit high. Probably about
>1/8" above the top mark based on checking it hot, many times, and
>parked on different "level looking" places to try to get a good
>reading. Could this be a factor?
>
>I was planning on taking a trip for about a week in the next few days.
>Probably 1000 miles or less. I can deal with the symptoms I have now
>but don't know if it will get worse or damage something inside worse.
>Opinions?
>
>Edward
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