Possibly the vehicle speed sensor or wiring on the transmission. Might be
two sensors on yours, one for the speedo and one for the Transmission
They both register the speed of the vehicle but if one goes bad there is no
info to read and the transmission thinks you are standing still. 8^o
Your vehicle might have on board diagnostics that will allow a scanner to
read what has happened or is happening.
Now was there an Audi A4 back in 1993?
That is a not one I recall in the USA since they came out in 1996 here, so
which country is this?
BUT I could be wrong!
(One out of many daves)
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