help?

[Pwn the Gt]

heya guys im new to the stang gang... i know pathetic.:banghead: I have a 90 lx with the 2.3. My tach is doing some strange shit. It reads real low and jumps up and down. can anyone give me some tips on where to start? im very familiar with motors just never had one of these. all help will be appreciated.

[86GTPONY]

Is the motor running fine and just the tach acting up? or is the motor bouncing around with the tach?

[Pwn the Gt]

on occasion the motor will jump but not that often. its mostly the tach i believe.