Tach issue on my 1981
Thread Starter
Racer
Joined: Aug 2006
Posts: 307
Likes: 4
From: Thousand Oaks Calif.
Tach issue on my 1981
On my 1981, I replaced my intake manifold and had my carburetor rebuilt and now have a tach issue.
The car runs great but when my tach gets to 3,000 rpms, the tech gets all wonky and the tach starts bouncing all over.
Figuring that since a lot of wires were pulled, maybe something isn’t plugged in correctly.
IMG_0166.MOV
Where might I look?
Any ideas?
The car runs great but when my tach gets to 3,000 rpms, the tech gets all wonky and the tach starts bouncing all over.
Figuring that since a lot of wires were pulled, maybe something isn’t plugged in correctly.
IMG_0166.MOV
Where might I look?
Any ideas?
Melting Slicks
Joined: Jun 2011
Posts: 3,116
Likes: 598
On my 1981, I replaced my intake manifold and had my carburetor rebuilt and now have a tach issue.
The car runs great but when my tach gets to 3,000 rpms, the tech gets all wonky and the tach starts bouncing all over.
Figuring that since a lot of wires were pulled, maybe something isn’t plugged in correctly.
Attachment 48322999
Where might I look?
Any ideas?
The car runs great but when my tach gets to 3,000 rpms, the tech gets all wonky and the tach starts bouncing all over.
Figuring that since a lot of wires were pulled, maybe something isn’t plugged in correctly.
Attachment 48322999
Where might I look?
Any ideas?
Do you still have the tach filter installed ?
1975-1989-corvette-tach-filter-installation.pdf (willcoxcorvette.com)
If the tach filter is still installed try running without. Also check connections to confirm clean connections.
Melting Slicks
Joined: Jun 2011
Posts: 3,116
Likes: 598
1975-1989-corvette-tach-filter-installation.pdf (willcoxcorvette.com)
It may not reach as required so use a jump wire.
