OK...I can't find the wire that the o2 sensor plugs into. It is nonexistant. Either that or i'm completely blind.

Question #1:
Can I patch the o2 sensor wire by running new wire from the ECU?

Question #2:
If I can do the patch, which wire is it out of the ECU?

Question #3:
What wires go to the fuel injectors from the ECU?

If someone can show me a diagram of the harness plug that would be cool!
That way, I have something to go by.

 

have you checked the FSM on ilovemyrx7.com ?

 

Just get the FSM and check.

1) I would assume so.

2) FSM

3) FSM

 

yeah you should be able to run the O2 wire straight to the ECU

 

Cool..thanks guys

 

sadly, iluvmyrx7.com has been down. it may be back up now or shortly, but it wasnt earlier today (or was it yesterday?).

1/2.) well, the wire to the ecu from the O2 sensor wire will still be there, so i imagine you could just splice it into the existing wire. you didnt say what car/ecu you have, so i cant say definately, but i have a 91 N/A and the plug is 2C for the Oxygen sensor.

3.)
Injector (Front Primary): 3W
Injector (Front Secondary): 3X
Injector (Rear Primary): 3Y
Injector (Rear Secondary): 3Z

i dont have their colors, but looking at your ECU plugs will tell you.

http://www.teamfc3s.org/main/factory...ual/1989_1991/

 

Sorry...I have an 87 TII with the N327(?) ECU