Hello
I have a 1990 Audi 100 2,3E with speedo problems that have been bugging me for some time. It started last summer when the speedo needle during drives from time to time stuck at about 80 km/h. It would then after some minutes usually fall to 0 km/h where it also could stick for some minutes until is went back to indicating the speed in a normal fashion. In outbursts of aggression and brute force it has been tried to knock on the top of the padding covering the instruments with an increasing amount of voilence. Some times this actually seemed to work because the speedo needle suddenly started indicating the correct speed again, but I don't know if the hammering incidents actually have caused the speedo to start working. After some months these problems seemed to occur more frequently and a couple of months ago I got the entire panel with instruments changed to a brand new one from an Audi dealer. The cable connections also got checked and were said to be fine. Some minor components also were changed at the same time. Now the problems seemed to have reoccured with the speedo needle often sticking at 78 km/h then fast falling in a number of steps to 0 km/h and often rising again to indicate the correct speed or sticking at 0 km/h for some time before getting functional again. Right now the needle is stuck at 78 km/h and has been for a period of time. The driving speeds have been almost all over the entire range from 0 to 200 km/h when the problems have occured. Moreover the counters indicating the distance covered for the car also don't work when the speedo needle gets stuck at either 0 or 78 km/h. Any good advice on these problems?
Bjarke