RE: [T3] AT adjustment

["Gary Gamboa" <gary_gamboa@hotmail.com>]

<x-flowed>CCW wasn't the cure. I turned it CW back to where it was and even further, 
it moved up the shift points, but I still get the clunk. My shift points at 
half-throttle are:

1st-2nd: 15-18mph
2nd-3rd: 30-34mph

This is probably too high. I should move it down.

I get rough upshifts only when the shift points are not right, otherwise 
upshifts are pretty smooth. The clunks occur during downshifts.

Also, lets say I'm cruising at 40mph, if I let off the gas and then reapply 
at the same pressure, I get a clunk, even though no shift occurred. That's 
what led me to suspect mounts/torque converter/ something other than the VM.

Thank you,

Gary Gamboa





> From: Jim Adney <jadney@vwtype3.org>
> Reply-To: type3@vwtype3.org
> To: type3@vwtype3.org
> Subject: RE: [T3] AT adjustment
> Date: Mon, 07 Jul 2003 10:27:11 -0500
>
> On 6 Jul 2003 at 10:09, Gary Gamboa wrote:
>
> > Okay, I adjusted the screw in the VM by turning CCW. At first I turned 
> it a
> > 1/2 turn, drove it, then another 1/2 turn. I did this about 8 times 
> until
> > the screw was almost to the rim of the opening. The only real difference 
> I
> > could tell is a significant drop in power and acceleration, still 
> clunking.
> > I'll try turning CW next. Did someone mention the effect of CW and CCW 
> on
> > shift points?
>
> Turning the VM modulator adjustment CW should move the upshift points 
> upwards.
> If adjusting it doesn't seem to have any effect, it is possible that the VM 
> is
> damaged. VW says that if the VM can gets bent then they won't function 
> right,
> and it'e easy for these to get bent if the AT is removed because of where 
> it is
> mounted.
>
> I find that the screw is generally recessed quite a bit. It's actually 
> pretty
> easy to adjust these by the book if you have a suitable pressure gauge. 
> Once
> you install the gauge the adjustment is simple. The Bentely manual has the
> details.
>
> Exactly when is it that you feel a clunk? Upshift or down? 1 to 2, or 2 to 
> 3?
>
> > The VM hose is 1/4 fuel line. Is this correct?
>
> Anything that fits is fine here. I suspect that the original was 7mm or 
> 7.5mm
> ID, which is right in between 1/4" and 5/16".
>
> --
> Jim Adney
> jadney@vwtype3.org
> Madison, WI 53711-3054
> USA
>
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> List info at http://www.vwtype3.org/list | mailto:gregm@vwtype3.org

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