nitewolf

i need some help with my ek, i have a 99 dx hb. my car was converted to obd1, i turboed it.

i took my kit off, i currently have a b20z2 in it with a skunk2 pro series mani and tb. i removed the jumper harness and plugged in a p2e ecu dont know the year, but i have 6 cels. i counted 14,41,54,65,70,91 my freind counted 14,50,54,75,70,91. it appears some of these codes don't exist. i have not replaced my injectors or map sensor yet, and i have no o2 sensors. i need emissions to get tabs. i already used "the car dont run" excuse. im low on funds and need some advice on what to do. FYI: ive started the car and it runs shitty (of course) and i have to feather the gas to keep it going. i also live in the northwest 253

TIA!!!!!

0HAMOTORSPORTS

If you have larger injectors and a non factory map sensor still intact, that'd probably be a good thing to start with... You can't run these on a stock/unmodified ECU..

And of course, you need both front and rear O2 sensors intact and properly wired for emissions.....

Take care of these and then get back to us...

nitewolf

i changed my injectors to z6 injectors, hooked up the 4 wire o2 sensor. it runs alot better stays running with out me pressing the gas pedal. i need help finding the second o2 sensor. there is 3 cut wires. colors of the wires are brown with a black stripe, yellow with a red stripe, blue with a red stripe.

new cels.

1-HO2S Circuit Low or high Voltage (Sensor 1)- could my o2 sensor just be bad. i found it laying around in my garage
14-ICS Malfunction or IAC Valve Circuit Failure
54-CSF Sensor Intermittent Interruption or CSF Sensor No Signal
65-Secondary HO2S Heater Circuit Fault (Sensor 2) - i need to know the color of the wires
70-A/T Concerns- guessing i have a auto ecu?
91-Fuel Tank Pressure Sensor Range/Performance or Fuel Tank Pressure Sensor Circuit Low/high Input-i dont know what i should do about this

if all of these codes aren't fix will i automatically fail?

nitewolf

need some more input

FEVERONER

7I'm going tru the same on a ls swapped ek
First I would get a ecu off a 96 manual beacause it has no fuel pressure sensor
And that will also get rid of 70
For crank sensor ill check behind the underdrive pulley if there's a plug there if not
Look up how to fool the ecu it has a crank sensor its easy just don't remember what wires u need to unite but ill look up a walk tru
Or you can buy a new oil pump and run a crank sensor trust me the other hella cheap
For 14 I still can't figure that out need help too I'm stuck

FEVERONER

7I'm going tru the same on a ls swapped ek
First I would get a ecu off a 96 manual beacause it has no fuel pressure sensor
And that will also get rid of 70
For crank sensor ill check behind the underdrive pulley if there's a plug there if not
Look up how to fool the ecu it has a crank sensor its easy just don't remember what wires u need to unite but ill look up a walk tru
Or you can buy a new oil pump and run a crank sensor trust me the other hella cheap
For 14 I still can't figure that out need help too I'm stuck

94EG8

Yes. Btw a P2E ECU will always throw an IACV code on a B-series engine (looks for a 3 wire IACV, B-series is 2 wire) either get an OBD2A P75 and an OBD2B to OBD2A jumper harness or an OBD2B P75 and have the immobilizer removed and replaced with a dummy unit. That will eliminate the AT code and the IACV code (will also eliminate the fuel tank pressure sensor code it its a '96 - '97 P75)

FEVERONER

http://www.scribd.com/doc/2547345/Ho...F-Bypass-Trick
Here is where I found the bypass trick for the crank sensor

FEVERONER

http://www.scribd.com/doc/2547345/Ho...F-Bypass-Trick
Here is where I found the bypass trick for the crank sensor

Mazdaholic

iTrader: (1)

yes, you will automatically fail if the CEL is on with even a single code.

if you're getting the A/T codes than you probably have an auto ecu (check the sticker on the side, it should say 37820-P2E-xxx, if the middle digit in the "xxx" part is a 0 its manual, if its 5, 7, or 9 its auto), so just get a manual obd2 ecu. The HO2S codes are related to the o2 sensors, so just try to find two functioning sensors (junkyard maybe?). For the ICS/IACV code check to see how many wires are going to the plug that plugs into the IACV. I believe the 96-01 b-series have a 2-wire iacv, while the 96-00 sohc's have a 3-wire. If it's 2-wire you will need to convert to 3-wire, so that the sohc ecu gets correct input. The CSF code is on because the b20 doesn't have a crank speed sensor (i believe), so you will need to swap one in (might need to swap an ls oil pump in for this, not totally sure).

Not sure on code 91, but this thread might give you some insight:

https://honda-tech.com/forums/hybrid-engine-swaps-18/fuel-tank-pressure-sensor-ftp-cel-90-ek-96-00-civic-1581107/

good luck!

nitewolf

So my best bet is to grab a jumper and run a 96-97 p75.

I just want to say thanks for all the help.

nitewolf

can i use any obd2a p75 or does it have to be 96-97

94EG8

If you don't have a fuel tank pressure sensor then you'll have to run a '96 - '97 ECU (unless you want to add the sensor, which involves swapping the fuel tank)

nitewolf

you guys are very helpful. i have one more question, how can i tell what year the ecu is. i know it has to be obd2a.

im getting my jumper harness tomorrow.

94EG8

Easiest way is to punch the complete part number (37820-P75-AXX) into bkhondaparts and see what it fits.

nitewolf

i got my jumper harness.

im having trust issues with people on craigslist saying that its a true 96 or 97 ecu. i ask for the part number and they never give it to me so i guess there a lie. alot of them are going for $150

i looked up ecu part numbers on acuraoemparts.com and all 96 b18b1/MT equipped cars came with 37820-P75-A02 ecu and the 97's came with 37820-P75-335

i just want to know if these are the same ecus i want to get rid of that Fuel Tank Pressure code along with the other problems i have.

thanks agian

nitewolf

Bump

Where's all the obd2 ecu masters hahah

FEVERONER

Try ebay they go for a 100 with shipping

FEVERONER

Make sure its a 96 the 97s trow that fuel pressure sensor

nitewolf

update: finally found a 96-97 ecu

im using a brand new rywire obd2b-obd2a jumper harness with a 97 p75-a03

i still have
54-CSF Sensor Intermittent Interruption or CSF Sensor No Signal
65-Secondary HO2S Heater Circuit Fault (Sensor 2)

54: http://ff-squad.com/wp/?p=309 this is my option, do i the wire on the ecu side of the jumper harness or the engine harness or?

65: i cant find the wires, and i would look to know what color they are. can i use any 4wire o2 or is it a special o2 sensor?

(there is 3 cut wires on the engine harness, colors of the wires are brown with a black stripe, yellow with a red stripe, blue with a red stripe)

thanks so much

94EG8

You can do it either way, but remember if doing it on the jumper harness use the instructions for an OBD2A ECU, of doing it on the on the engine harness use the instructions for an OBD2B ECU.

What engine harness did you use? Using an EX or Si harness will leave you with no secondary O2 sensor plug as it's part of the cabin harness on those cars. You can use most honda 4 wire O2 sensors from '92 - '00/'01

nitewolf

i believe its the stock harness, ive never changed it.

94EG8

Wire colors for the secondary O2 are:

Black/Yellow
Black/White
Green/Black
White/Red

If it's a Y7 harness the plug should be pretty close to the plug for the primary, say about a foot away.

nitewolf

update: i got rid of code 54

i have no idea where the secondary o2 sensor plug is, i cant find it. i might just take the whole harness off.

if i cant find it i was thinking of just wiring it to the ecu. some people say you can just leave it in your cabin and it wont throw a code. i also read people wrapping it in aluminum foil or zip tying it out of the way. is this true? thanks agian

nitewolf

Update: so today I removed my engine harness and found out that it is a si/ex Harness the pressure switch and solenoid plugs where taped up in the loom hiding. That's why I couldnt find the secondary o2 sensor plug.

I'm going to quick splice the secondary o2 wires straight to the ecu. I don't have a correct spot for it to go. Can I just leave it sitting somewhere and be fine?