Tachometer reset
Thread Starter
Racer
Joined: Aug 2006
Posts: 307
Likes: 4
From: Thousand Oaks Calif.
Tachometer reset
On my 81, I pulled my tachometer and replaced the tach board because it wasn't reading the RMP's correctly. Now its in it doesn't start at the correct starting position. When Idling its at like 100, when at maybe 3000 rmp's it shows 2000, at 4000 it's at 1000. It's working but its not at the correct starting position. How do I set its starting position?
Racer
Joined: Aug 2013
Posts: 264
Likes: 58
From: Virginia
with ignition on and engine off, does it read zero? If not, you can remove the actual needle and put it back on at zero. And I think with the key off, it's ok for the tach needle to show between 1-2k. Also, I remember reading something somewhere about making sure the input from the distributor goes to a specific spot, otherwise the board may interperet the signal for a 6 or 4 cylinder? Not sure if it is applicable to yours or not. I've been reading an awful lot lately and can't find the specific webpage about it right now.
Hope this helps.
Hope this helps.
Le Mans Master
Joined: Jan 2001
Posts: 6,689
Likes: 1,365
Here. view this. save the link for other Willcox pointer videos- tach zeroing begins at about 4:35: http://repairs.willcoxcorvette.com/1978-1982-corvette.../
