i've checked a few other threads and haven't found anything yet. My car was down for about 2 or 3 months and when we went to start it up the tach wasn't reading at all. The voltage, oil pressure and fuel level are all working still though.
Any ideas?

 

do u know is any abody took out the shift buzzer?.. Some body did that on mine it wouldn't work cuz the buzzer has 4 solder point in the ciruit board.. Witch caused it not to work.. I solder the holes closed on the board and it works fine now

 

The tach runs off the trailing coil. Check the connections, try to spray it with cleaner and make sure its securaly grounded (it grounds throught the bolts). The trailing coil is right next to the drivers side shock tower.

 

cool i'll check on both of these things. thanks guys.

 

Ya a lil sand paper on the contacts won't hurt either.. Where it screws in on the circuit board