I took my needle off my stock tach yesterday and now it reads 500rpm less. Is there a way to make the tach reset itself? If not how could i correct this?

 

maybe take it off again, when the car is off and try setting it back to zero.

just a guess.

 

I've all ready tried that.

 

i wish my tach was only off by 500 RPM!!!

 

do you remember what your tach idled at when the car was warmed up before you removed the needle? if so, just start the car and let it warm up, then take the needle off and place it at your normal idle rpm's.

 

lol, amen to that

 

Diabolical, I tried that and its fixed good enough. I can live withit being off only by a 100.

 

unfortinatly my picture is not showing, but it was a shot of my tach pegged while i was on the dyno, i was watching the dyno read-out for my REVS,and pegged out the tach it is off by that much.

 

or you can get a auto meter he he its only 105$

 

Try turning your iginiton key to the position just before cranking the car. All the gauge needles should boucne around and settle to their approprate positions. The tach should be at zero, if the needle isnt on zero then put it there and then start up and see if its reading correctly then.