i have a p2e-l01.and i need to know the 4 wire o2 sensor .and 3 wire iacv pinout .any help would be much appreciated

 

You didn't say what year the ecu was out of or what four wire 02 primary or secondary :
ECU DIAGRAM
http://technet.ff-squad.com/wiring.obd2a.htm

96-98 OBD2A



99-00 OBD2B
http://technet.ff-squad.com/wiring.obd2b.htm

 

sorry.on the ecu it says 1997 civic ex.the engine im using is a d16y7

 

Then the OBD2A pinout is the one you need.

Why are you using an EX ECU on a DX/LX motor? It definitely isn't the ideal match. The biggest differences off the top of my head are the lack of vtec, and the fact that the Y7 uses 190CC(180?) injectors, whereas the Y8 (EX) uses 240CC (230?) injectors.

 

and i think the ecu im using only looks for primary o2 sensor

 

Use the first diagram posted for OBD2A.
If you want to confirm match the ecu connector and make sure it is:

http://hondata.com/techecuid.html

 

Any OBD2 ECU looks for both. Identify the sticker and make sure it is a P2E or a P2P.

 

well i brought the car off a guy who missmatched parts .i need to pass smog before i do any engine swaps .so im trying to get it with no cels

 

Also if the P2P is a manual ecu it uses a 2 wire IACV as opposed to the 3 wire on the Y7 auto and manual. Also the P2P looks for a knock sensor as well.

 

im using p2e.and my cel is p0135 witch is o2 sensor .bank 1 sensor 2 .i have the 5 wire primary witch needs to be a 4 wire right?

 

Take a picture of the sticker on the ecu and or post the codes P2E-xxx from it

 

and i got a p1509 for iacv .witch on the y7 is on the tb so i got a new y7 tb i just need to wire it

 

You have to use a 4 wire primary. What model is the civic?

 

You need to be more clear on your setup. Pics would help but it sounds like Frankenstein's monster of combination of parts.

 

its a y7 ecu

 

97 civic hx .

 

ive already learned what i need to know about my engine i just need the pinout for the 4 wire o2
https://honda-tech.com/forums/honda-civic-del-sol-1992-2000-1/97-civic-hx-d16y7-swap-iacv-p1509-o2-sensor-p0135-cel-codes-3120297/

 

where do those 4 wires lead to? all to the ecu?

 

do you know where those 4 wires lead? will i be able to use some of the old 5 wires?

 

this is a manual .and all i have to work with is a y7 block .and it will pass smog with a y5 intake .y7 tb.y7 block .