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

Check engine light fixed, then not fixed

Discussion in 'HYBRID -> EG-EK / DC' started by girls_are_mean, Sep 10, 2006.

  1. girls_are_mean

    girls_are_mean New Member

    Messages:
    31
    Likes Received:
    0
    Joined:
    Aug 17, 2006
    Location:
    utah
    Car- 1994 civic ex
    Engine- B18C obd2 (a or b i don't know)
    Engine Harness- harness that came with engine
    ECU- xxxxx-P72-A01

    Ok, so I put a B18c into my civic. Moved A20 to A17, gave my IAB a switched 12v power source (12v when key is in run position, see picture)

    iabwire.JPG

    and then ran the knock sensor wire to D3. c-racing.com's walk through said that if you had a ex or si you didn't have to worry about wiring vtec cuz my motor was vtec. so I start it up, hard 22 (vtec pressure switch) is thrown, rev limiter kicks in at 6500 rpm. So I looked on motoralldata.com, was looking for the vtec pressure switch on my motor and couldn't find it (see picture)

    coolant temp.JPG

    all I could find was a coolant switch so i grounded the vtec pressure switch from the ecu, test drove it, vtec worked, rev limiter was at about 8000rpms now. yay!!! So I hook up my stock exhaust temporairily untill later this week when I can go to the exhaust shop and have my exhaust made and call it good.



    So I go to my friends house, take him for a ride, in 3rd or 4th gear at 7000rpm's check engine light comes on, vtec isn't engaging anymore. CEL is 22 but it clears when I turn the car off so its not a hard code. I've been reading these forums non-stop for about 2 days trying to get ideas. soo did I screw something up? is my vtec pressure switch somewheres else? I thought I heard somewhere that some jdm engines don't have a vtec pressure switch. Any ideas would be helpful, tell me if i screwed up, call me a dumbass, but above all help.

    thanks

    and i know that the wiring splice for the iab sucks, my soldering iron is at work so that is going to get solder and taped tomorrow so don't make fun of that.


    EDIT: Just FYI my engine is jdm and my ecu is usdm so could that be causing the problem? I talked to someone and they said that i have to buy a usdm vtec soleniod/pressureswitch assembly to make my cel go off... but I am planning on buying a apex v-afc II later on so I was wonering if with the v-afc I could bypass the pressure switch to make the cel go off and the vtec engage.

    also my engine lvl is good (4.2 qts with a new filter) and I tried bypassing the pressure switch by jumping a4 to d6 at the ecu to no avail.

    thanks
     
    Last edited: Sep 11, 2006
  2. girls_are_mean

    girls_are_mean New Member

    Messages:
    31
    Likes Received:
    0
    Joined:
    Aug 17, 2006
    Location:
    utah
    So today at lunch I was bored, hooked up my stock p28 ex ecu, no cel, vtec worked, so I took the vtec pressure switch off of my d16, tap and drilled it into the vtec solenoid plate and used my p72 and everything works now, so you can lock this thread i guess. thanks
     
Verification:
Draft saved Draft deleted

Share This Page