97 ls tach spaz

lilskater519

wheelies
ok so my tach on my 97 LS just does its own thing and goes bananas through the rpm. it has nothing todo with the enngine, it idles, runs and shifts great its just the tach bounces all over. i figured it either has somthing todo w/ the wiring behind the bezil or somthing in the coil.
 

WAR 178

Premium User
I had the same prob years ago on my other teggy. I thought it was going to be the new monster tach and shift light that was just put in. NOPE! Ended up being my dizzy. I have no idea how that played a factor, but once changed out it didnt happen anymore. Try out another one if you have one or borrow just to make sure. also check out your VSS and the harness/connector. g/l
 
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