ok, i have my pr3 b16a engine swapped in my 88 crx hf. i accidently sold my stock hf wiring harness so i had to pick up an 89 hf harness which should be the same. tonight im hooking up all the wiring connections to the engine and it seems as though i only have one connector for one o2 sensor. i really didn't pay attention to see if my stock HF engine had only one o2 sensor but if it did then do i just wire the second one up directly to the ecu? i know i sound like a dumbass but it's confusing. thanks for any help.

 

yes your harness will only have 1 o2 sensor wire, best bet is to run both o2 sensors to their correct pinout to the ecu

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by PURPLETERROR &raquo;</TD></TR><TR><TD CLASS="quote">yes your harness will only have 1 o2 sensor wire, best bet is to run both o2 sensors to their correct pinout to the ecu</TD></TR></TABLE>

the d only has one o2.

^^^^ thats a good suggestion to avoid mixing them up and getting bogging under acceleration.

 

Just like PURPLETERROR said, or you can wire them and switch the plugs.

 

Or you can switch the positions of the two sensors in
the exhaust manifold so the round sensor plugs in to its stock location
and then add the second wire to C8.