Ferrari Mailing List: Re: Help with transmission leak

[Hans E. Hansen (FList]

I don't know specifically about the 400i, but a really good
tranny mech can fix this in-car - w/o pulling the tranny.

You unbolt the tranny, slide it back a bit, slip in a wrench to
undo the torque converter bolts, slide the tranny a bit further,
pull out the converter, and *viola*, you have access to the
seal.  I watched a true master of this proceedure do it many
times.  But the 400i may not have enough room to do it this
way.

Hans.

On 4/7/08, Britt2Asa [at] aol.com <Britt2Asa [at] aol.com> wrote:
>
>
> I am pretty sure its the input seal. The tranny works perfectly, silky
> smooth and I don't want to pull it to fix this. Its just to much work and
> expense for a leak. There aren't any "tranny pros" over here for Autos much
> less for a 400i tranny. At the going rate of Ferrari mechanics it would be a
> hefty bill and no guarantee they know what they are doing anyway with a GM
> auto. I know that a cure in a can is not a sure thing but thought I would
> give it a go.
>
> Britt
> Where is it leaking?
>
> Pan gasket?  (which would be easy to fix)
> Input seal?  (Minor difficulty to change - tranny pro
> could do it in 1/2 day on a "regular" car.  400i, I don't know)
> Tail housing seal?  (should be easy to change.)
>
> Unfortunately, most TH400 leaks that I've seen were in the
> input.
>
> I don't know of a 'stop leak' product that I would trust, but
> try getting an estimate from a tranny shop.  It might not be
> that bad.
>
> Hans.
>
> On 4/7/08, Britt2Asa [at] aol.com <Britt2Asa [at] aol.com> wrote:
> > Hi Guys,
> >
> > The 400i has had a very slight leak in the automatic transmission for the
> > past 4 years. It messes up the garage. I do not want to strip out the
> tranny
> > (had enough on this car it it works perfectly). Is there any such thing as
> a
> > tansmission leak stopper I could try. Its a GM 400 series auto box. Over
> here in
> >  the UK not so common but seeing as they made millions of them for the
> states
> > can  anyone advise if there is a "leak stopper" in a can I can try that
> > wouldn't  damage the transmission. Kind of like Bars Leak (which does
> work!) but
> > for a  tranny.
> >
> > Thanks for you thoughts.
> >
> > Britt
> >
> > BR in the  UK
>
>
> BR in the UK
> 1986 328GTS (LHD 89,940km) Died August 19, 2006 Shrewsbury UK
> 1980 400i (RHD 72,000 miles)
> Searching for the right 512TR
> 2003 BMW 530d
> 1991 Alfa Spider S4