Re: Automatic transmission

[jtrealty@xxxx]

Refer to Workshop Manual G:04:01. At the bottom of the page is a chart 
that explains what the shift computer does. Get the test light set-up 
installed so you can watch the solenoids energize and compare to the 
chart. If EL2 is always powered (sticking you in second gear) then the 
switching transistor has probably shorted. In extreme cases after the 
caps blow up sometimes the transistors go too. The erratic shifting is 
a combination of moisture, bad solder joints and blown caps. 
Unfortunatly we do not have a schematic of the shift computer. If you 
find one of the transistors shorted my advice would be to replace both 
of them since you are in there, they are cheap and the surge that 
killed one probably damaged the other and it will soon fail.


--- In dmcnews@xxxx, "Arne Hofmann (Beta LAYOUT GmbH)" 
<arne.hofmann@xxxx> wrote:
> Hi all,
> I had the common erratic shifting problems with my
> automatic transmission.
> Thanks to Mark Hershey I understood very well, where
> the problem comes from. I replaced the broken caps
> and added the two 0.1 microfarad caps to the GND and
> VCC supply of the comparators. > A schematic (even handdrawn) would be a great help. 
> 
> Thanks a lot!