Help Needed, Unusual Tachometer problem

Hey Bill..

I have the same problem as does another friend of mine and we both drive s14's.

I have searched the net for a while now but cant find an answer.

Did you have any luck in sorting it out?

James

-- jvr_bas

------------------------------------------------------------------------ Posted via RealCarAudio.com - The checkmate of the caraudio community.

First thing to check is for a grounding problem. Just because the connections "look" OK, is not enough; Uncouple each connection and brush with a wire brush or such, to remove oxidation, then re-attach. Worse case could be internal degradation or component problems inside tach.

Rose thanks for your help...

I have pulled the instrument cluster out, and gave the connectors a clean. I will try find the earth.. as that sounds likely.

It seems to be a fairly common problem, yet no one I have spoken that has had the problem has fixed it.

-- jvr_bas

------------------------------------------------------------------------ Posted via RealCarAudio.com - The checkmate of the caraudio community.

I don't know where the sensing element on this model is. All connections between sensor and tach need to be cleaned, including earth (that includes connections which are not easily seen but that are shown on the wiring schematic for that model). It's rare, but even the connection at wires which are crimped at a connector could be suspect to oxidation (a re-crimping normally solves this). Remember, if all connections are clean and all continuity is confirmed, then suspect the tach. If you have access to a pulse counter, you can check the input to the tach.