Hi,
I have a 1997 R Reg 306 Turbo Diesel S. The tacho only works for a short while after starting the engine. It does seem to be related to the temperature of the engine. If dead cold it works for about five minutes. If warm it only works for a minute or two. If hot it does not work at all. From cold it works fine until it starts to become a bit erratic (indicated revs drop) and finally it stops working completely.
Any ideas? Also, where is the sensor located?
Thanks in advance.