My tach has been bouncing, as other's, '88 240/M47, and sometimes stopping altogether until hot??? So I started with the entire ground system under the hood. The two grounds on the fuel rail were badly greened, were snipped, and a new fasteners soldered on with anti-corrosion applied. That actually cleared up bad throttle response in the morning when cold and accelerating through 2nd and third gears.

The tach, however, took longer. First pulled the intrument cluster, cleaned up prongs where it plugs in, applied anti-corrsion, re-assembled, nothing! Went to the coil, burnished spade connector on terninal #1, anti-corrosion, nothing! STill bounced, sometimes, dead other times? This morning, I thought, why not. And I snipped off the wire containing two leads, separated the white with red stripe (Tach) from the 14 guage white, soldered new separate spade connectors and gave the two wires their separate positions at #1 spade connector at the coil. Jumped in, hit the starter, and presto!, steady tach needle.

I'm getting really fascinated with this little car the more I fix, and the better it runs. It's truely a wonderful little car. Thanx to all for posting about all these things and giving me a better hands on method of being a DIYer.