Long story short, my girl is bringing over her '80 244 DL for me to fix. It's very much a project car, but it runs well. Like most females however, she is more concerned with how it looks inside then how solid the engine is. Oh well.

A few questions, Someone added a tach to the car, but it doesn't work at all. The wire runs to the coil, but there is no tach life. I'm thinking that the tach just isn't getting power, which is the same reason that the temp gauge doesn't work. The gas gauge DOES work however.

I've encountered the opposite before (temp gauge works, but not the gas gauge), but not this. I'm a bit pressed for time, so I haven't really been able to comb though the archives as much as I'd like, but I'm sure someone will know the answer.

The car also has a somewhat poor idle, i.e. it will stall after you start it if you don't give it any gas. First, I'm going to see if it runs any better after I disconnect the O2 sensor, and if I get that tach working, I'll check the base idle, but then what should I do?

Thanks as always.