Tachometer Issues

jac1892

Active Member
Guys the tachometer in my 1982 c3 is acting strange, when I accelerate hard the tach goes down as the engine r.p.m.s are going up. Do you have any ideas how to fix it?
 
what is the current ignition system?
is the tach OEM?
how long since your last tune-up?
can you post clear detailed pictures of the spark plugs?
how many OHMS of resistance does EACH of the current spark plug wires show,
on a multi-meter if you measure end to end?
 
Thanks guys, the ignition is O.E. tach is original, with a new cap from D.U.I. wires from Taylor. When driving the tach. works fine, until I jump on it the engine winds up but the tach goes to about 1000 rpm and bounces around and then catches up , by that time I'm off the accelerator. I will pull the plugs and take pics,
 
There is a small replaceable circuit board inside your tach you need to change its not hard but pay attn to directions
 
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