i had my a/f gauge running to the white wire on the o2 sensor on my down pipe, and it was working correctly, i put a jummper harness on my car with a p28 and uberdata and an afc2, and put obd1 clips and a resistor pack with my injectors, and then the a/f gauge stopped reading, i checked all the wires and even resoldered it, it is hooked up the same as when it was working...... is this a common problem? do i need to hook it up to my ecu or else where? or is there a problem with the gauge ( brand new) ? i am out of ideas on this one....

1997 prelude turbo - 15psi

 

what gauge is it?

 

its a phase a/f gauge i got from advanced auto parts because the apexi ones i had were stolen so i needed to get new gauges quick

 

My autometer gauge has always been on the thicker white wire near the ECU, and didn't have any problems after I converted to OBD1. You sure your gauge didn't just go bad or short out or something?

 

Get one of those variable voltage output whateverthehell things (i've got one in my basement if you need a pic, forgot what its called). Run through the 0-1 voltage range to make sure the gauge is working right.