Tachometer

All of the sudden today my tach will not move over 2k. What would cause this? Is it timing related our tranny related?

 

Does the engine sound the same? Like does it still keep on pulling after the 2K stop?

 

Engine and trans seem to be functioning fine. I did notice my idle seems to be a little lower than normal but does run fine.

 

HI
Did you maybe flipped the switch that changes it from 4. 6 & 8 cyl.
good luck
tim

 

I havent touched it since it was installed. I did install a new voltage regulator the other day.

 

Is it a sunpro tach? My first one from them took a dump. But the second is still running fine.