1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

y7 to y8 swap ecu problems

Discussion in 'HYBRID -> EG-EK / DC' started by custompainter, Jan 17, 2007.

  1. custompainter

    custompainter drive it like U stole it

    Messages:
    597
    Likes Received:
    4
    Joined:
    Jan 16, 2007
    Location:
    central CT
    i just swaped a y8 into my 99 dx and i'm trying to use a p2p but it seem to be not running at it full rpm rang i'm also getting a couple codes 14,22,65 on the CEL i also tryed using a p75 ecu from my old intagra and it runs a lot better it seems but i dont this the vtec works with the p75 and that one is also running a code on the CEL 16 = wich is fuel any answers on wich way i should go p2p or p75
     
  2. welfare

    welfare Ancient Member

    Messages:
    1,120
    Likes Received:
    9
    Joined:
    Apr 19, 2004
    Location:
    New York
    cel 16 is a fuel injector failure, check your wiring and make sure all of the injectors are working.
     
  3. custompainter

    custompainter drive it like U stole it

    Messages:
    597
    Likes Received:
    4
    Joined:
    Jan 16, 2007
    Location:
    central CT
    yeah i know that much
    that code is coming on because i had a p75 from a b18 hooked up but the thing of it is that the other codes i'm getting from the p2p aren't coming up and i want to use the p2p cause of the vtec but i keep getting codes 14,22,65 and the car wont rev up it goes up to about 4 grand and starts bouncing on what sound like a rev limiter
     
  4. custompainter

    custompainter drive it like U stole it

    Messages:
    597
    Likes Received:
    4
    Joined:
    Jan 16, 2007
    Location:
    central CT
    i just put a d16y8 in my 99 civic dx i'm re-using the stock dx harness and distributer. i just made a conversion harness to go from the obd2b to obd2a so i can use the p2p ecu i've all ready swapped pin 16 to 15 on the A plug for the fuel
    the car turns on and runs but the idel is all over the place kinda vering up and down and when i try to rev it up it die's right out when off the gas again and picks back up and holds idel and starts vering again
    i tryed the CKF jumpers i tryed switching IAC's around (b23 - b15 - b6) did nothing i also checked if it was wrong and it was the other way (a14 - a12 - a13)
    wasn't so thats my prob!
    I also hooked the old ecu back up and switch pin a15 and 16 back turned back on and ran fine but's the (dx ecu p2e NON VTEC) any thoughts for a fix
    I also have tryed to adjust the timing a little and got nothing
    I know it in the wiring but i have no clue where to start





    another thing is there a way to get the vtec to work with the p2e ecu i dont care if the damn ecu is a p2p or a p2e i just want the vtec to kick in i have a turbo for this car too i just want to get all the power i can
    aem fuel rail, aem fuel presure reg., rc 310cc injectors, ihi turbo with a 8 lbs wastegate, hks blow off, ACT stage two clutch and flywheel, pilot cat back,
    i just want this thing to f-cking go i'm out in conneticut and no one has a sick single cam and the extra horse from the vtec is what i'm trying to get so if theres a way to hook it up with out the ecu please let me know because an 90 horse engine without the turbo is a joke and well that extra 30 40 horse will be nice i also have the distributer from the d16y8 but i have no harness for the motor if need be i will get the harness but i'm all out of money and i want the sh-t done

    . alright i went thruogh the steps pulled the back up fuse and reset i did this first with a p75 got a code 16
    then i did it with the p2p and got code 14 - 22 - 65
    p75 - 16 fuel injector problem
    p2p - 14 IAC Valve (Idle Air Control) defective circuit or unplugged / defective
    sensor
    22 VTEC Oil Pressure Switch defective circuit or unplugged / defective oil pressure switch
    65 Oxygen Sensor Heater (Secondary) malfunctioning or defective oxygen sensor heater
    as far as the code 65 goes i know that there is no ground hooked up from pin D13 cause there was no cross refference when i made the harness conversion i can add it easy but i dont know what to tie it to ?
    as far as the code 22 goes i know that the presure switch is hooked up but there is two wires coming off a (blue/black + black) blue/bla is connected to the ecu (i hard wired that 18 gauge wire) the black isn't hooked up i didn't think it was needed = anyone know where it goes ?
    now the code 14 i have no clue i know it a three wire setup and that there on the b23,b15,b6 do you think they need to be just switched around or what

    see the p75 doesn't through a code 14 it throughs code 16
    so what the hell is up with the p2p
    another thing i just found i dont have three pins hooked up
    1) IP + HO2s pump cell + pin C23 black wire
    2) IP - VS - HO2s common pin C24 red wire
    3) VS + VS cell voltage pin C25 white wire
    do i need these theres no cross reference that i can find to tell me where they go
     
  5. JDM_EK9R

    JDM_EK9R all motor

    Messages:
    81
    Likes Received:
    1
    Joined:
    Nov 4, 2006
    Location:
    central, NJ
    wow your killing me here.... just use the ecu that works and buy a vtec controller. they make jumper harness' for your stock wiring/ecu so you dont even have to have it installed, you can do it yourself via plug-n-play. get a vafcI or II. Not sure if NEO will work though not much experience with it.
     
  6. welfare

    welfare Ancient Member

    Messages:
    1,120
    Likes Received:
    9
    Joined:
    Apr 19, 2004
    Location:
    New York

    Yah, ground, if the switch isn't working, then the solenoid isn't gonna work either (switch is checked for oil pressure before vtec is engaged)

    and get the vtec controller like ek9 said, seems easier than the rest of the crap.
     
  7. custompainter

    custompainter drive it like U stole it

    Messages:
    597
    Likes Received:
    4
    Joined:
    Jan 16, 2007
    Location:
    central CT
    right on guys let me play with this thing for a bit and see where i get
     
Verification:
Draft saved Draft deleted

Share This Page