GTstangB.F.D.M.

hey guys.. im finally trying to install this damn gauge.. and everything is/has been hooked up except the green wire that goes to the o2 sensor.. i am tapping the rear sensor, passenger side..

there are 4 wires..
-Green
-Blue
-Purple
-Black

after first tapping the green.. nothing happen when i started the car..

tapped the purple.. and then the guage went from permanently being in rish position.. it moved down to the lean position.. but nothing more..

tapped the blue.. same thing..

black.. nothing..

WTF!?!??!

IF YOU KNOW WHY OR WHAT WIRE TO TAP... PLEASE HELP!

howarmat

i dont think you can just tap the wires.....not too sure, but they might just send a 0,1 or 5 V....meaning like you found, rich or lean.....what kit are you using?

PROMETHEUS PRIME

If you tap the rear o2 sensor you wont get the right reading if running cats.

GTstangB.F.D.M.

well i have high flow cats.. and i ended up finding out that the black wire is the sending wire..

so i tapped it.. and its working.. but its not real sensative.. which would make sense, if i went to the upstream sensor.. it would polly work better.. but whatever.. atleast its doign SOMETHIGN now..

hammeron

hey i'm glad you got
it working gtstang

LX200

Huh? YOu using a wideband? If not, it will just jump from rich to lean. No real use.

PROMETHEUS PRIME

Not all true. You will still get a general reading at WOT with a non wide band. HAd one on my focus when running nitrous and the biotch pegged lean when my fuel pressure dropped. Saved me a motor.

GTstangB.F.D.M.

how did it save you a motor?................ OHHH bc when you were rompin on it.. it went lean and you saw that so you let off im guesing?..

dunno.. but yes ppl .. i know these are worthless.. but i figured it would be better than anything else for the time being since im not near getting blown yet..

PROMETHEUS PRIME

Yep. I was spraying at the time so there could have been plenty of damage. You can always tap into the o2 wire that is coming off of the PCM.


Just don't use this kind of connection unless it's temperary.