Tachometer (rev meter )

[AusRs]

strange thing started in my car a few months ago
tacho is reading almost double the rpm that the car is actually doing
tap the dash and it goes back to what it should be reading .............go over a bump and it plays up again

any ideas on where to start looking to stop this thing annoying me !

[marco_1978_spyder]

Easy one, just pop the tach out of the dash...you should see a little plastic press in piece that holds a small flat metal piece that bridges 2 points to tell the tach what motor its reading a 4, 6 or 8.

Just make sure its not loose, or just solder up the connection and you should be back in business...

Also check the filter wire at the dist. If its loose and shaky you can develope a bad connection there that makes the needle bounce all over. Have someone flick the brown wire lightly it and see if the needle jupms arounds

[AusRs]

Thanks
pulled the tach out and removed the plastic thing and soldered a wire across the join seeing as i will never fit a smaller engine to the car
will take it for a run tomorrow and see what happens
also found the speedo cable has separated from the end

[AusRs]

thank you
works perfect now

[marco_1978_spyder]

No prob Mate, glad I could help!