Alright, long story short I got a 95 cx hatch with a d15b that I could NEVER get to run right. It always broke up at about 4500 and would throw a TDC code even with a new dizzy and ECU.

So I got a integra, pulled the engine and put it in the EG. I was going to swap the harness as well, but the dumb ass before me cut the dizzy plugs off. I didnt want to wire up the 02 sensor, so I had a chip burnt and mailed to me. I put it in my po5 and it wont even prime the fuel pump. I had 2 other chips (turbo b18b, turbo d15) they will both start the car, but of course it runs like shit. With no chip in the car runs, but of course real bad.

So I swapped in a ECU from my girlfriends integra...car ran fine. So I got yet another stock obd1 ls ecu. The car idles fine...most of the time. Now Im getting a code 14, and code 41. I didnt run any of the wires for the o2 yet. The car idles good, but once driving it breaks up all over the place. The CX has no tach so i put in a autometer a while back. The gauge is flickering all over the place anywhere above idle.

So....I swapped in a known good IACV from my last setup and the code is still there. My question is, on the CX harness what colors are the wires for the IACV? I believe they are blue/white, yellow/black. On the LS harness they are blue/black, yellow/black. Some times, i will have the IACV wire plugged in and it will idle fine and throw the code. Other times it bounces from 1500-500 back and forth.

If those wires are correct, what the hell is the issue here? Are the ECU pins different from the integra to cx harness for the IACV or what?

Also anyone know a good write up of the 1 wire -4 wire o2?



Edit: also, this integra thats the donor car was sitting in a field approx 1-2yrs. So i had no idea if it ran or its history