Date: Wed, 11 May 2016 12:41:10 -1000
Reply-To: Scott <SCOTTDANIEL@TURBOVANS.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Scott <SCOTTDANIEL@TURBOVANS.COM>
Subject: Re: Autotranny
In-Reply-To: <CA+az7_7-eo=2x0iyGoS5tZkw7wO4Uampj06HjEpd75CyQ3tW+Q@mail.gmail.com>
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Stumped ? ...
'Mystified'...... perhaps since it 'shouldn't be happening' ..
I'd say it's fiar to say 'stumped' after ALL diagnositics and
inspections and tests that can be thought of have been performed..and
there still is no explanation.
I liked the idea of drive it a bit,
try an ATF trans additive ..I like Prolong ..
and ...X something ..right .....TransX .
I've had an auto trans work again using that stuff.
You're Sure the Valve Body has actually been cleaned ?
I think you mean the filter screen was replaced.
Valve bodies are complex tricky things .
German Transalxe sells rebuilt/refurbished ones.
and that's only after they run it in a trans on a dyno .
there are little adjustments to do ..look in your Bentley manual.
also as mentioned, there are ports on the side of the trans for
measuring pressures ....regular diagnotic procedures.
study your Bentley some to get an idea.
it only takes something leaking and not sealing right,
or a blockage of a passage ..
as for things to check ..
as mentioned it's easy to inspect the governor weights under the round
cover on the left side of the trans ..
doubt you'll find anything there, but it's easy to take the cover off,
and pull out the gov weights thingey.
just occurred to me to send a sample of the ATF out for Oil Analysis .
if it's pretty fresh and clean may not reveal much though.
how about free movement of throttle cable, and lever on side of trans (
throttle cable goes to that, not throttle body ) and adjustment/'free
movement of rod from lever to throttle body ?
Basically ...you and your mech want to get down to ..
is it something external to the trans ..you are Sure it's really in D
and not the next gear down when the lever is in D ? ..for example...
so, something external..
or something fluid related .
or it's internal to the trans ...at which point it gets pretty intense
and specialized.
Scott
On 05/11/2016 12:03 PM, John Rodgers wrote:
>
> This tranny worked fine when it was parked for the engine change at
> 118, 000 miles. The valve body had been cleaned and reinstalled with
> a new filter. It ran well before the engine change. A year later ( due
> to complications with the engine) it doesn't work. Currently ATF
> level is to the mark, and fluid is new! This one has me and my
> mechanic stumped!
>
> John
>
> On May 11, 2016 16:09, "Scott" <SCOTTDANIEL@turbovans.com
> <mailto:SCOTTDANIEL@turbovans.com>> wrote:
>
> If it worked fine before the 12 months of sitting, I would say the
> sitting caused the problem. Seals getting dry and hard and not
> sealing. I would warm it up and drive it around gently at low
> speed with the shifter in "2" to get the tranny up to temperature
> and then see if it starts to engage 3rd. You may also want to try
> one of those fluid additives.
>
> Does it work fine other than not shifting into 3rd?
>
> I don't think the engine overheating would cause tranny issues.
>
> Edward
>
> On Wed, May 11, 2016 at 11:32 AM, John Rodgers
> <jrodgers113@gmail.com <mailto:jrodgers113@gmail.com>> wrote:
>
> What would be some causes for the autotranny not to shift into
> 3rd gear. It
> worked fine before but has been sitting for 12 months!
>
> John
>
>
