Unique tach issue. - Third Generation F-Body Message Boards

rtchaney · 11-09-2009, 09:27 PM

This is interesting, the tach in my Camaro is reading twice what it should. I know that if it were aftermarket, that wouldn't be a hard fix; the car is bone stock though. Any ideas? I haven't pulled the cluster yet and the white wire is connected firmly to the coil.
- R

madbomber824 · 11-09-2009, 09:43 PM

just from personal expierence i did a v6-v8 swap but when completed i hooked up my origional tach and realized that it was reading way too high rpm than it actually was. I did some research and the v6 and v8 tachs are programmed different. Was it always reading high? Ever a engine swap?

rtchaney · 11-09-2009, 10:13 PM

hmmmm... It's a new to me car but the vin states that its a TBI 305. Although, now that I think about it, the title is exempt on mileage. Maybe a cluster swap? If so, how can I fix this on the cheap?

madbomber824 · 11-09-2009, 10:32 PM

umm u can find a person thats good at programming computers and such can probably do it fairly cheap. maybe check all ur connections and everything first.

joshhsi · 11-10-2009, 05:20 PM

I had the same problem with a "doubled" tach. I found a used rs gauge cluster online for $20.00, pulled the gauge and the little circuit board and it now works fine.