O2 wiring
Thread Starter
Joined: Mar 2007
Posts: 488
Likes: 1
From: Hampton Roads VA
O2 wiring Anyone know what wires coming off the harness are the o2 siginal wires? The guy i bought the car from 2 years ago hacked them off becasue the longtubes melted them... Now i got my new motor in and i am running way to rich i would like to re hook them all up and get a good tune.. and some big numbers
On my 1995 i have a four wire o2 senor a black a white a white and a gray. How many wires do you have. Its fairly easy to determin what wires go where with a multi meter. two wires are going to be a heating element Power and ground the other two are a signal and a refernce. The heating element should have voltage at cold start up but not after closed loop mode happens, witch also might not happen cause they are not connected. The Refrence wire should be a 1V at all times and the other should be a scaling voltage in millivolts from. Good Luck
