98 Civic "HX" B18B1 LS wiring problem

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S

Sil VurFoX

Member
Please help..
I'm throwing engine code P0135 Primary Heated 02 Sensor circuit fault , P0113 Intake Air Temp. sensor circuit High, and P1337 Crankshaft Fluctuation Sensor no signal.

Here is what I have..
1998 Civic "HX" stock wiring harness.. the only model that has the 7 wire o2 sensor
Engine B18B1 I believe is a 94-97 model.. doesn't have the sensor on the crank.
ECU 37820-P75-AO3 which I belive is a late 97 or possibly early 98 computer?

I tried to wire a 4 wire Bosch replacement 02 sensor but I've failed. What do I need to do in order to kill this engine code? Purchase a "EX" wiring harness?

If I remember correctly the 02 sensor is tied together some how with the IAT fault code that I'm throwing. I'm hoping once I fix the o2 it will cancel the IAT.

Do I need to buy a 1996 model ECU to cancel out the P1337 code?

With the engine throwing these codes, the local dyno ran it and I have 230whp 200lb of torque. But I need to sort these codes before I can go any further.. any thoughts would be appreciated.
 
Originally posted by Sil VurFoX@May 25 2004, 05:23 PM
With the engine throwing these codes, the local dyno ran it and I have 230whp 200lb of torque. But I need to sort these codes before I can go any further.. any thoughts would be appreciated.
Click to expand...

230 hp is it built?
 
Pissedoffsol:
This is the serial number on the ECU is 37820-P75-AO3-980-204125L6 which I belive is a late 97 or possibly early 98 computer out of an Integra "LS". I've tried to research the computers and I belive the 1996 computer 37820-P75-AO2-980-103929 computer should eliminate the code, because the CFS sensor was on 1998 on up TEGs. What do you recommend? Is my thinking correct on the "EX" wiring harness changeover? I've read a ton of your postings and hope you can point me in the right direction. Thanks..

SpodaB1:
The engine is completely stock.. 230whp / 200lb of torque @ 7lb of boost.
I have a 96 "LS" engine that is being sleeved, Wiseco Pistons, Carrillo Rods.. and my new Garrett turbo..should support 450whp.. but I want my electronics figured out before I go any further.
 
Well figured this thing out.. I put a 96 "DX" engine harness in my "HX" and I burned the old one for the hell of it.. My engine is OBD1 so I bought the skunk 2 jumper harness and a P75 OBD1 ECU with the Hondata chip.. going to the dyno in two weeks..
 
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