jdm civic 2000

i just swaped in a b16b r motor in my 2000 civic dx,shes runnin good but the idle is jumping,and the code from the ecu(93) is 14,which is the "iac valve",im using my 2000dx wiring harness and i had to rewire a plug to fit on the iac valve so when i went to do that ,i noticed that there are 3 wires from the dx harness,and the "iac: needs 2,so i need info on what to do to get it to work,ive already tested the "iac"and it works ,but i need info on how to convert 3 wires into 2 wires or directly run a wire to the ecu,and if so,what pin #(93 ecuw/ jumper harness,to fit 2000dx plugs of harness)any help or advise is greatful,but experties is a must

xhatchracerx

i have the same problem as you do, expect i'm running a JDM B16a (2nd Gen) that i converted into OBD2 and was swapped into a 2000 DX as well. Code 14 the iac valve has been pissing me off since i had the swap done. The idle constantly flucuates and is never at a normal idle of 700-800 RPM, am i correct? Let me know how your idle goes up and down. Also my iacv plug is only using 2 wires out of the original 3 from the DX. My idle problem happens when i'm out of gear, whether its in park or rolling down the street. I have tried swapping the iacv and it still has not changed the idle and i've concluded that i either get a excellent working condition iacv or figure out what that third wire for the iacv does. I have EK and DC2 ecu wiring diagrams, but i dont know if they'll help any.

jdm civic 2000

ok,well if you eccelerate to 1500 does it bounce up and down ,cause, mine does and i have all the same problems,im using 2 wires out of the 3 and im pissed off too,either,all 3 wires have to be used or the open wire has to be compensated some where else,if you find out anything or vise vera well let each other know,im down fo helpin someone out whos in the same boat as me.......................any one out there help us........joe

stockegsix

ok, i had this problem before,(code 14). i have a jdm b16a in my 97 civic dx coupe. i'm using my stock wire harness and a skunk2 obd1-obd2 harness. i just rewired a14 to a12 on the skunk2 harness. most people will move the pin itself, but what i did was spliced a wire from a14 to a12. no more check engine light,
and car idles fine.

i posted something like this before, you guys can check my post history. hopefully this helps. peace

jdm civic 2000

thanks man,im gonna try that ,a14 to a12 ,any help is good,but please post,it might not work thoe...but thanks

Dr.Kimball

I had a similar problem with my IAC. The easiest way for you to fix it would be to scrape up some cash and just buy a 99-00 SI wiring harness. I got a 96, so this wasnt an option for me. Gettnig a 99-00 SI wiring harness makes life that much easier when doing a swap in a 99-00 civic.

jdm civic 2000

well i really dont need to change the harness i just need to know a solution to converting 3 wires to 2 wires,but runnin a jumper from pin#12 to pin#14 might work to ,im gonna try this on monday,if not then ill think about the harness option..........joe

jdm civic 2000

hmmmmmmmmm.interesting

xhatchracerx

pin #6 Blk/Blu = drives IAC valve positive
pin #15 Orn = drives IAC valve negative
pin #23 Blk/Blu = drives the IAC valve

these pins are for OBD2 B16a, i'm asumming that pin #6 and pin #23 come from the same wire on the IAC valve.

jdm civic 2000

yup thats correct but i tried to use one wire and 2 on another,but it doesnt do anything,tried that when i got the car started,or unless i splice into 6 and 23 and run a jumper from that......gonna try it.........joe.......thanks

xhatchracerx

i looked at my wires and the only one that isnt connected is the Orn wire the negative for the IAC valve. My car is running fine right now without that wire, maybe you should try swaping the other two wires that drive the iac. Dont know if it'll help any but its working for me.

jdm civic 2000

ok well ill give it a try again.........thanks

cardriver

Would you happen to have a picture or diagram for which is which as far as a14 and a12 go? swapping 95LS into 97Ek ....I'm having the same IAC problems..3 wires into 2. I have the skunk harness but I need to know which pin is which. thanks.

moike

this diagram helped me. check the colors and compare with the harness plug to locate the correct wires. note any asterisk because there ARE differences between years and motor numbers.

cardriver

Thanks for the diagram. It helped out a lot...my check engine light is off but my idle still acts wierd ..it fluctuates between 1000 and 700 while idleing...also on cold starts my car revs up and bogs down while idling. Is this normal? could I have a vacuum leak? what about the fast idle thermo valve? Could this be a reason for that? thanks a lot.

spooned-ek

Im running a 99-00 mini me, y7/y8. i have a similiar idle problem (bouncing from 800-2200 rpms) yet it runs fine after you get it in gear...UNTIL i beat on it a bit, then it throw the IAC code, dropping me down into Limpness. I am using the dx wiring harness and a 99-00 ex ecu...and the wires that go into the IAC are different than 96-98s.... I have black/blue which is iac postive, orange = iac negative, and a black/yellow or yellow/black *cant remember i have no idea what the yellow and black one does... I cut the iac postive and ran it to the iac signal one... and i left the orange connected to the ecu. Anyone have any idea what i might be doing wrong?

jdm civic 2000

to correct the problem you need to locate the obd2 1/2 part under the das were the ecu is,its a plug that isnt used,theres the solution,it fixed my iac

96BlackHB

" The IACV will need to be rewired if you are using a CX or DX harness. Just use the plug off the Integra harness (2 wire) and match the colors to the Civic harness (3 wire). You will have an extra Orange wire that is unused, just tape it out of the way. Next you have to move the wire at A14 to A12."

Quoted from the following site:
http://www.eddiesun.net/~trey/6gen/

Read over it...I think it covers everything you need. Good Luck.

SPOONfdEK

I second that

Esoterikos

take it off...it should have two bolts, two coolant lines, and the 2 pin connector. remove all of this stuff and spray through it with throttle body cleaner...not air intake cleaner, THROTTLE BODY cleaner...also try moving the valve back and forth to help clean all the way through. or, buy a new one!

xSpooNxEkx

this picture is a life saver ... thanks

SPOONfdEK

what picture are you looking at? , did you fix the problem ?

jcivic

i like to know too how to fix this problem too.

jcivic

uppppppppppppppppppppppppppppppp!

IVI

sorry to revive this from the dead but im having the same problem and their solutions werent that clear to me i dont understnad and also im not running a dx harness, i believe i have a gsr harness with an obd1 ecu and conversion harness. the ecu is a p28, b16 jdm computer.