i have seen this on a few camaros , has anyone tracked this down, the tachs dont work at all the bounce around like they are shorted or beating to a music tune. like i said i have seen this a few times but never got into tracking it down. has anyone seen this problem and actually found the source of the problem.

 

This is fairly common. Do a Google search on Camaro bouncing tach, and there is a whole history of fixes.

 

searched for awhile the only lead i could come up with is the pick up coil inside the distributer, im haveing a feeling it is not gonna be that tho.

 

I had put a 97 4.3 vortec into my mom's 84 S10 and was having running issues. It would run great and at any moment want to die but would just keep trying to run. It would restart on its own most of the time and be fine. As I was driving home and it was running fine I happened to look down at the monster tach I placed by the floor shifter and it was bouncing but the truck was running smoothly. That gave me the idea toreplace the ignition module with an extra I had and the truck has not died and the tach works perfect now.

 

just did wires and mines fixed

 

Mine bounced really badit wouldjump from 80 down to 50 the go back up. This started a couple of days before my evil opti went out.Mine is a 4th gen though.

 

is this english?^
and what is 80-50?

anyway new spark plug wires fixed my problem instantly

 

check your batter to see if your terminals are tight that happened to mine because i added an amp wire and it didnt get tightened all the way