Re: 156 Speedometer problem
Sorry Sensible, it's not a problem I've encountered, but as nobody has answered I'll try. I suspect it's likely to be in the wiring between the sensor, ECU and speedo. It's ever so easy to get the speedo unit out, and you can waggle the wires on the back around to see if any connections are loose. Perhaps someone with more knowledge on this can chip in, but I think the speedo takes its input from the ABS sensors. Could be worth checking the connections at the wheel hubs.