Tach not working
Thread Starter
Racer
Joined: Nov 2009
Posts: 489
Likes: 1
From: Suffolk Virginia
Tach not working
Hey Guys,
My tach stopped working on my 76 auto. I removed the starter recently, when I re-installed tach was broke. I don't know if its related.
The tach is frozen at 5300, nothing happens when I unplug from distributor.
Is there a good way to check to see if it's the tach board or something else?
Thanks!
- Jay
My tach stopped working on my 76 auto. I removed the starter recently, when I re-installed tach was broke. I don't know if its related.
The tach is frozen at 5300, nothing happens when I unplug from distributor.
Is there a good way to check to see if it's the tach board or something else?
Thanks!
- Jay
Former Vendor
Joined: Aug 2006
Posts: 76,656
Likes: 1,847
From: Jeffersonville Indiana 812-288-7103
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15
I would pull the connector off the back of the tach, it's kind of hard to reach but very do-able...
Then test the tach wires at the connector for power (C) and ground (D). If you have power and ground, then test continuity on the brown signal wire from the connector to the filter connector. If you have continuity from A to B then bypass the filter and plug the brown wire straight into the coil... If the issue stays, replace the tach board, if the issue goes away, replace the filter.
If you do need to remove the tach for repair, here is the easiest way to remove the left hand lower dash pad. It sounds hard but it's not...
1968-1977 Corvette Left Hand Dash Pad Removal
If you wish to install a new tach board..
Here is how you do it:
And if you need a new board that is USA made and works like the original.. we'll I've got them too
https://willcoxcorvette.com/corvette...75-77-usa-made
There is a ton of tach info on my tech site and it can be found at this link: http://repairs.willcoxcorvette.com/?yt=1976&s=tach
-Willcox
Then test the tach wires at the connector for power (C) and ground (D). If you have power and ground, then test continuity on the brown signal wire from the connector to the filter connector. If you have continuity from A to B then bypass the filter and plug the brown wire straight into the coil... If the issue stays, replace the tach board, if the issue goes away, replace the filter.
If you do need to remove the tach for repair, here is the easiest way to remove the left hand lower dash pad. It sounds hard but it's not...
1968-1977 Corvette Left Hand Dash Pad Removal
If you wish to install a new tach board..
Here is how you do it:
And if you need a new board that is USA made and works like the original.. we'll I've got them too
https://willcoxcorvette.com/corvette...75-77-usa-madeThere is a ton of tach info on my tech site and it can be found at this link: http://repairs.willcoxcorvette.com/?yt=1976&s=tach
-Willcox
Former Vendor
Joined: Aug 2006
Posts: 76,656
Likes: 1,847
From: Jeffersonville Indiana 812-288-7103
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15
