Yea thats what it does. It goes back and forth when you drive.
Real cool-like

 

Wow that really shows how mature you are.......

 

just hook it to the white wire on the o2 sensor...we all know that they dont work well...the man just wanted to know which wire to hook it to

hope this helps, also it will take a few mins for the o2 sensor to warm up before it will start reading. so drive it around the block. it will show straigh rich until it warms up

 

lmfao so you want a gauge that bounces color up and down and does nothing for you? ricer.

 

How is that immature? Its what it does!

 

Anyway, this isnt tech at all. So this thread should be moved to the STylEZZZ forum or something.