i hooked up a 4 wire o2 sensor on my 93 CX because i put a DX head on it and im usin a pr4 ecu , i hooked it up to the spots on the ecu that a member here told me to and i go to start the car and it wont start.. i tried it with a DX ecu too and same prob? what are the correct hookups for a 4 wire DX o2 sensor?

mike
also does it matter which black wire goes where cause there are 2 .

 

i am pretty sure your o2 is not the problem, your car should still start

 

Just a thought, not really pertaining to your question though, Shouldn't you use different pistons so the valves dont come in contact with the pistons?


[Modified by EF9_SiR, 1:20 PM 2/22/2003]

 

it had to be the o2 sensor. cause when i cut the wires off that i tapped into the ecu for it the car starts fine.. with them there it dont.. my pistons have indents for 16 valves but i do hear a little tapping that wont seem to go away no matter how much adjustment i do.. maybe its not the valves though..

 

up

 

what happen to the o2 harness that was on the car