I have had Seafoam AT treatment work very well in one case and also had a
couple of cases where it didn't help much.
  Worth a try.

Larry A.

On Wed, May 11, 2016 at 9:49 PM, Jeff Schwaia <vw.doka@gmail.com> wrote:

> It most definitely can!  I have a friend you popped a cooling hose on his
> '88 and decided that it was only a mile to home...
>
> When I checked out his van, it still ran... kinda, but the auto
> transmission was fried!  The squeal it made was unlike anything I've ever
> heard from an AT.  My tranny guy said it was one of the worst looking
> automatics he's ever taken apart.  Pretty much un-rebuildable.  Had to buy
> a core transmission for him to rebuild.
>
> Cheers,
>
> Jeff
>
>
>
> -----Original Message-----
> From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf
> Of Dennis Haynes
> Sent: Wednesday, May 11, 2016 6:00 PM
> To: vanagon@GERRY.VANAGON.COM
> Subject: Re: Autotranny
>
> Did it ever work properly after the engine was replaced? Yes it is
> possible that an overheated engine can transfer enough heat to the ATF
> cooler to damage it. The automatic transmission consists of a bunch of
> hydraulically applied clutches. Not only is hydraulic pressure used to
> apply the clutches but the valve body also uses fluid pressure to make
> decisions.  Any failed seal or stuck/clogged valve can prevent the works
> from working! A knowledgeable tranny guy will know who to diagnose one of
> these units. To isolate a valve body problem from a clutch-piston problem.
> The valve body can be removed and compressed air can be used in the ports
> to test the pistons for reverse, forward, direct, and the 2nd gear brake
> band. The 2nd gear brake band piston can be serviced with the trans in
> place. Anything else means removal and a teardown.  If those test good then
> you can work with the valve body and the governor. Also it is possible for
> the direct clutch pack to be burned out. The trans could be shifting but
> that pack is slipping so bad you don t get the gear change.
>
>
> Dennis
>
>
>
> -----Original Message-----
> From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf
> Of John Rodgers
> Sent: Wednesday, May 11, 2016 6:03 PM
> To: vanagon@GERRY.VANAGON.COM
> Subject: Re: Autotranny
>
> 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> 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>
> > 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
> >>
> >
> >
>