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Re: [T3] Automatic troubleshooting


On 31 May 2003 at 21:27, Russ wolfe wrote:

> On Sat, 2003-05-31 at 20:43, Jim Adney wrote:
> 
> > I'm interested. My 73 slips on the upshift between 2 & 3 when I'm just giving
> > it light throttle. If I hold my foot down this delays the shift to higher
> > speed/rpms and the shift occurs smoothly. The good news is that it's done this
> > since we bought it in '90 and it hasn't changed a bit in that time.
> > 
> > All the other ATs that I've driven don't do this and I've checked everything I
> > can think of short of tearing down the whole transmission. I've even had the
> > valve body apart and adjusted the bands. VM is the proper one, and is adjusted
> > properly for a 73.
> > 
> > Everything inside looks clean and happy. Other than this one complaint, it
> > works perfectly.
> > 
> > Any thoughts?
> > 
> The guide says for delayed into "D" at partial throttle:

"Delayed" make me think of a shift that takes place too late, ie at higher rpm 
than it should. That's not what I have. OTOH, the second "half" of my shift IS 
delayed, so I'm not sure which your guide is referring to.

> Vacuum hose connection faulty
> Primary throttle pressure valve sticking (pressure test)
> Valve body dirty (pressure test)
> D+R clutch plates burned or worn (do stall test in reverse)

I can check the first and last items pretty easily. Thanks.

-- 
*******************************
Jim Adney, jadney@vwtype3.org
Madison, Wisconsin, USA
*******************************

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