Autometer Tach only reading half-of actual RPM
#1
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
So i just got done installing a tach, and for some reason the tach is only reading half of the actual RPM? My stock tachometer is showing 1000 rpm but the autometer is showing 500rpm.. Anyone know? i wired the "green" wire which is supposed to get a tach signal into pin #10 which is the "Engine Speed Signal" pin on the ECM. what am i doing wrong here?
Sorry if this is the wrong section.. I know it doesnt exactly belong here, but i thought id get a more ... "competent" answer
Sorry if this is the wrong section.. I know it doesnt exactly belong here, but i thought id get a more ... "competent" answer
![Chug! Chug! Chug!](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_chug.gif)
#2
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
ALSO, really, REALLY, REALLY strange.. for some reason before i started the car.. the Autometer tach sort of jumped to 1500 rpm and stayed there.. and when i was adjusting my driver seat foward... the tach started moving... everytime i moved the seat. wtf?
is it haunted?
is it haunted?