h22a swap, p13 ecu problems..please help

[schackai]

I have a 92 si and I just finished a putting a jdm 95 vtec motor in. I used the distributor and intake manifold off the si, but put the vtec fuel injectors in the si intake manifold. I also used the si wireharness and I know I wont be able to use vtec yet. My problem is when I hook up my jdm p13 ecu to this setup the car will not run properly. It revs but wants to bog down and is not driveable. When I hook the p14 si ecu up the car runs fine, no vtec of course. I tryed running straight wire to the vtec cylonoid and the vtec oil pressure sensor and then to the ecu to have vtec wired but I still have the same problem with how the car runs. Is my p13 ecu bad?? Or do I not have something hooked up?? Please help.

[Prelewd]

I'm not 100% sure, but the thing that raises the red flag for me is using the H23 distributor on the H22 motor.

[AcesHigh]

Did you swap the fuel rails and lines from the Si to the h22a? The intake manifold on the Si and VTEC are pretty much identical, so you didn't really need to use the Si's. Also, in addition to the two wires to the pressure sensor and solenoid, you need to run a ground wire to the engine block. It's the wire on the pressure switch.

(Oh, and you do have to use the h23 dizzy.. and also need an external coil bracket)

[schackai]

Im sorry, i made a mistake, i am using the h22a intake but I am using the si injectors, but they are the same anyway. I did ground the black wire coming out of the pressure sensor also. What is the "h23 dizzy" and an external coil bracket ,and would this cause the motor to act the way it does with the h22 ecu?

[Prelewd]

I think by dizzy, he means distributor. An external coil bracket would be for an external coil.

[schackai]

ok, i will try switching distributors to see if that works. my heater hose tore lastnight so I got some work to do anyway.

[Prelewd]

Originally Posted by schackai

ok, i will try switching distributors to see if that works. my heater hose tore lastnight so I got some work to do anyway.

Ace said to use the H23 distributor.. isn't that what you have in there already?

[schackai]

yeah, but thats not working, i tryed the h22 distributor today but it must have a bad internal coil because the car wont turn over, i tryed with both ecu's.

[schackai]

I found today that usdm h22 motors have the same distributor as the usdm h23 motors (external coil). But the jdm h22 motors have a completely different distributor. It has an internal coil. You probably already now this. Sorry, i'm new. Since I have a jdm h22 motor with a jdm p13 ecu it seems like I would have to have the jdm distributor with the internal coil. This would probably solve my problem with why my car wont run properly with the usdm h23 distributor on this setup. Please tell me what you think, and I appreciate all the help so far. Thanks.

[schackai]

CORRECTION...This will probably solve my problem with why my car wont run properly with the the p13 ecu on this setup.

[AcesHigh]

Sorry about not being around. Anyhow, yes, that's right; the JDM h22a has an internal coil. To make it work, you must use the h23a distributor with the h23a external ignition coil and an external bracket.

I got my brackets from here:
http://www.hondaautomotiveparts.com/...=IGNITION+COIL

[schackai]

I have the h23 distributor and external coil. They are both hooked up right now, but I dont have the bracket. I dont see how not having a bracket could cause the p13 ecu to not function properly.

[AcesHigh]

You're right, the bracket just holds down the coil.

Wait a sec, I read your first post again... You made a circuit from the VTEC solenoid to the pressure sensor, and then to the ECU? And where specifically did you connect the wire to the ECU?

I think that's your problem right there. The solenoid and sensor wires must come individually to the ECU, and connect to their respective pins. The black ground wire completes the circuit.

[schackai]

I ran the vtec solenoid wire straight to the A4 slot on the ecu, and the green wire from the pressure sensor to d6 slot on ecu, and the black wire from the pressure sensor to a bolt on the motor to ground it off. but i had problems with the p13 before i hooked all this up. with the p13 ecu hooked up the car will rev, but revs very hesitive, and seems to overload, not driveable.

[AcesHigh]

Hmm, then you've got me. I have no idea. If all else fails, try it with another p13, but I realize this isn't very practical.