Tachometer not working.
This is for my nieghbor's '80 300SD. His tach isn't working and we already tried the cigarette butt trick, but with no success. We also tried putting in a "new" tach from an instrument cluster that he bought to fix another problem. Anyways, his tach still wouldn't work. Does anyone know how the rpm sensor works and has anyone changed one before?
1994 MB E320 Coupe (199,500 mi)
1992 MB 190E 2.6 (173,000 mi)
1983 Porsche 911SC (148,000 mi)
2004 Volvo V70 2.5T (198,000 mi)
President of CT/Westchester Section