ok heres the problem all of a sudden my rpm gauge on the cluster is acting like it can't get an accurate rpm measure. but my hondata s300 is showing the rpms fine on my laptop and my timing gun is getting the rpm signal w/ no problem, and my vafc thats only hooked up to tps and rpms is getting the signal with no problem. now when the car is at idle it shows 0 on the cluster but if i give it some gas to about 3000 rpms then it reads accurate, but if i give it gas to about 2000 rpms(according to the vafc, hondata and timing light) the cluster reads 1400-1500 rpms
and the car is a eg hatch

 

Do you have any other components tapped into the tach signal wire?

 

i have a piloit shift light but thats been there for over 3-4 years. but i am going to unhook it to see what happens. sence u mentioned it

 

Does it have a module?

LMK