1995 Villager Tachometer Problems

The tach on my 95 Villager became intermittent several years ago and now rarely comes alive. The car runs fine and I have tried to get wiring diagrams/info on how the tach is driven from the dealer but the said they would probably need to replace the instrument cluster. There must be a loose/burnt connection or some sort of sending unit. Does anyone have any ideas?
Thanks :banghead:

The pcm receives tach info from the cam sensor inside the distributor and sends it to the instrument cluster. You can try to re-seat the harness connection at the I/C and see if it helps. More than likely the dealer is right about replacing the I/C.

The pcm receives tach info from the cam sensor inside the distributor and sends it to the instrument cluster. You can try to re-seat the harness connection at the I/C and see if it helps. More than likely the dealer is right about replacing the I/C.

I pulled the distributor and checked the cam postition sensor - voltage drops were in specs. No OBD I code for the cam sensor either, so I figure is it is a connection. When I take long road trips sometimes the tach comes alive and will work on and off for days, but in town (short trips) it never works. I pulled the panels and am staring at the PCM. Not sure which wire to wiggle and concerned I might do more harm. I will try to get to the back of the I/C and wiggle there. Thanks for the response.