The needle is not moving at all although the guage itself still lights up.
I'm guessing my probe is screwed.
However, I didn't install the guage and I wasn't 100% sure which one is the probe.
I was thinking the one on the test pipe would be the o2 sensor but I could be wrong. So I like to double check.
Which one is the probe?
Also, how do i make sure that my probe is the problem?