I jsut bought a 1993 Audi 100S..My 1st Audi...The car shifts (Auto Tran) really hard from 1st to 2nd..2-3rd isn't as hard and the funny thing it only does this when the car warms up. It shifts perfect when cold. I have had the tranny serviced and flushed out. STill same problem exists. I have heard numerous ideas to why this is doing this...heat sensor... where is that? ...computer problem...I have a extra computer module....I am really torn cuz I love this car otherwise...just need someone to direct me from there advice...please help...ty
Try disconneting the battery for 10 minutes to clear the transmission TCM coding.TCM is TransmissionControl Module. DSP is Dynamic ShiftProgram - It is what learns your driving style, road conditions, etc. and adjusts the shift points automatically. The TCM controls your transmission shift patterns. I have the same problem with my 92 Audi 80 4 speed automatic. If you have access to a VAGcom, then you can reprogram your transmission to shift smoother. You could also take it to a dealer who has a VAGcom, VW, Audi dealer and have them reprogram the tranny. Only takes about half hour. The only problem with disconnecting the battery is at first, your transmission seems to behave better, however once the fuzzy logic in the DSP learns, it reverts back to the way it was before you made the change. Sometimes mine shifts beautifully, the way it should, then the next time I start the car it shifts rough and erratic. It can be very frustrating. If you take the car to someone with a VAGcom, Tell them to turn the DSP "Off". You will be a much happier camper.
Printable Version
1993 Audi 100S Tranny Problem Please Help - 
