# Whats wrong with my RPM gauge? **URL:** \ **Category:** Maintenance/Repairs\ **Tags:** chevrolet, camaro\ **Created:** [July 25, 2012, 7:40am UTC](https://community.cartalk.com/t/whats-wrong-with-my-rpm-gauge/73750 "2012-07-25T07:40:36Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![berlinetta5541](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/berlinetta5541/32/2539_2.png) [@berlinetta5541](https://community.cartalk.com/u/berlinetta5541)\ **Post date:** [July 25, 2012, 7:40am UTC](https://community.cartalk.com/t/whats-wrong-with-my-rpm-gauge/73750/1 "2012-07-25T07:40:36Z")
I have a 1979 Chevy Camaro and when ever I turn the car on so it only lights up my dash, my RPM gauge goes all over the place, and the engine isn’t even turn on yet. And also before i even put the keys in the ignition, the RPM is sitting at 10. What should I do to fix this? ---
**Author:** ![Barkydog](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/barkydog/32/2470_2.png) [@Barkydog](https://community.cartalk.com/u/Barkydog)\ **Post date:** [July 25, 2012, 7:43am UTC](https://community.cartalk.com/t/whats-wrong-with-my-rpm-gauge/73750/2 "2012-07-25T07:43:06Z")
Have a proper diagnosis done/ ---
**Author:** ![Tester](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/tester/32/15976_2.png) [@Tester](https://community.cartalk.com/u/Tester)\ **Post date:** [July 25, 2012, 8:00am UTC](https://community.cartalk.com/t/whats-wrong-with-my-rpm-gauge/73750/3 "2012-07-25T08:00:21Z")
79 Camaro? If there’s a hint of rust on the vehicle, look for poor ground connections. Tester ---
**Author:** ![the\_same\_mountainbike](https://avatars.discourse-cdn.com/v4/letter/t/c89c15/32.png) [@the\_same\_mountainbike](https://community.cartalk.com/u/the_same_mountainbike)\ **Post date:** [July 25, 2012, 10:08pm UTC](https://community.cartalk.com/t/whats-wrong-with-my-rpm-gauge/73750/4 "2012-07-25T22:08:41Z")
Find a shop that specializes in automotive electrical systems. This is a clear wiring problem and it’ll take a knowledge of and access to wiring schematics and multimeter use to find out where it is. You could possibly isolate it to a specific circuit by removing fuses one at a time until the problem goes away, but that can be tricky becaue all of your circuitry essentially is connected via a common ground…your chassis.