OK fixed my main relay/ecu problem on my 92 EG which turned out to be a fried ECU...now throwing a code 41....bad O2 sensor. Get down to Autozone and pick up a new one complete with harness for $64. Get home and Ughh....stock is a one wire!?! Their system doesnt have the one wire listed for my car and all the online parts places list the same bosh 4 wire(part # 15710) as being correct?

 

all 92-95 = 4 wire, somethings mesed up if u only have a one wire sensor. Maybe someone tried to change it b4 u & put the wrong one on there. i don't see how ti would work properly tho

 

Dont think so as it was an unmolested car and the wiring is bone stock. The one wire O2 is plugged into a factory connector that is also one wire.
What I'm thinking is that my car is a really early 92 that used a few leftovers from 91. When I first pulled the codes I was looking for the 2 pin connector with a brown and black wire....mine's blue and green! Even a few wires at the Main Relay are different color than what I was told.
Other thing is that I tossed in a P06 ECU, mine was a P05. I'm now thinking that my O2 sensor is good, it's that the P06 is looking for the O2 sensor to heat up which it wont since it's a one wire....which really sucks cause I'd have to track down another P05 ECU.

 

Not true. The CX uses a one wire O2 and the VX uses a five wire wideband O2.

The DX P06 computer is looking for a four wire and will trip the code. Find a CX P05 and the code will go away.

 

Think the only problem with running a CX ecu is that the one wire O2 sensor/ecu is for non-cali cars.
I'm just gonna go with the P06 and add the extra 3 wires to run the 4 wire O2.