04-02-2012, 10:02 AM
|
 |
CC Member
|
|
|
Join Date: Jan 2012
Location: Stafford,
VA
Cobra Make, Engine: LA Cobra / B&B 427 SO
Posts: 54
|
|
Not Ranked
I picked up a circuit tester that also checks RPM for $35 at Autozone. Good place to start before you jump to buying a new one. I needed to verify the signal coming into the tach was correct. Mine is but the tach is jumping all over the place. Next you need to make sure you've got a good ground. If you do and the feed from the coil/MSD box are good - you probably need a new tach.
|
Threaded Mode
