xFCdrift3Sx

Ok heres the situation, i pulled the engine and trans in november due to an incident involving the abuse of the stock clutch. well i finally got the parts and put engine back in. (owning an rx7 + high school + working part time =broke)

So anyway while the engine was out I deleted the vac. spider, solenoid rack, installed a push button starter, toggle switch ignition, and blocked of damn near everything.

The primaries dont seem to be opening and im very confused as to why. i figure even if i got the plugs wrong they would still open, right? I mean its likely that it wouldnt run but still would be getting fuel, which it wasnt. I did the pressure sensor trick and made it read zero pressure and it started and ran on the secondaries (not well but whos shocked?).

im wondering if any one has a list of the harness connectors and where they go or a diagram or pictures or something like that so i can see exactly what goes where and ensure that the problem is not just a stupid wiring error on my part.

Thanks in advance you guy, any input will help

hanman

First I would check and see if you have power to the injector connectors. You should have 12V to one side of each connector. You should get a pulsing 12V to the other side as you turn the car over.

texFCturboII

iTrader: (17)

It's kinda hard to wire them up incorrectly, the harness for the secondaries wont stretch to reach the primaries, and vice versa... make sure that the clips are on snuggly, and that the injectors are getting 12v as stated above, and also that from the ECU, you are seeing 12v w/ key to ON for each injector.

xFCdrift3Sx

I mean i think i may have problems with grounds or something like that, its getting the steady signal but no pulse on the other side it makes no sense. im thinking that maybe the lack of an ignition and proper starter wiring may have something to do with it. cause i used the block a the ground and theres hot wires going the the starter and the starter solenoid cause the ground on the solenoid isnt working and i couldnt replace it at like 10:30 at night. so i just made it work. im not sure if maybe teres a relay or something not opening up or what but im so confused and frustrated :/

texFCturboII

iTrader: (17)

Get those fixed and see if it helps, Im confused as to how you are getting power to everything without an ignition switch and turning the key to ON... did you steal it? lol....j/k With key to ON the fuel pump should be running and the injectors should be getting power, when cranking / running they should be pulsing. If you do not see 12V at the ECU, at the injector, and pulsing after the injector than you have have one of four problems:

1- Bad wiring, so you must repair or replace the harness. Check the condition of the injector clips and make sure that pins aren't pushed back and that everything is connecting well....
2- Bad injectors...... probably the former however.....
3- Bad ECU
4- Your EGI fuse is blown

HAILERS

The ground wires for the ECU are shown in the attached jpg. They are on a ring terminal that gets bolted down to the rear rotor housing.

That isn't your problem because you say the engine does run??? Yes.

I'm not sure about your boost sensor trick to make the secondarys work. The secondarys won't work UNDER 3800 rpms EVER.

You might have created your own problem thru the push button starter thing. On a normal car, you go to START. Not only do you send a signal to the starter solenoid, you also send a signal to the ECU. THAT signal tells the ECU that your starting the car and to use the internal ECU fuel start map and NOT the afm signal for fuel.

If the ECU does not see that start signal, then it uses the AFM for start fuel which is REALLY lean for a cold engine during starting. Makes a car difficult to start.

To see if the injectors are getting power, you pull the small plug off the ECU and put the key to ON. Then see if each of the light green wires have batt voltage. The color of the primay wires is shown in the attached jpg.

xFCdrift3Sx

the fuses were the fist thing i checked. i replaced both primary injector plugs. the harness, ecu and injectors were good when the engine was taken out. so it seems possable but kinda unlikely i would think

xFCdrift3Sx

thanks man. i will test the green wires tomorrow. what you said about the start map makes sense as to why there are so many wires that went to ignition switch. most do not appear in any wiring diagrams and everything got power by connecting two wires which i found kinda strange. since the switch was labeled and i remember it having 2 that were unknown to me. i remember one labeled IG2. do you know what wires send the start map signal. o and my ecu ground is in the right place. i did come across a strange connector that had a single black wire attatched to a little black box with a ring termanal on it, im unsure where it went or what it even is other than it appears to be a ground of some sort.

xFCdrift3Sx

well i didnt test the wires yet or do anywork at all. yet again progress on bringing my baby back to the road is being held up again. on monday morning i woke up with horrable stomoch pains. i went to the doctor at 11 a.m. and by 10 p.m. my appendix was out and they were saying that i couldnt be on my feet do any lifting or basicalluy anything for like a week. so the waiting game begins again. thanks to every one who posted and helped me out. keep your fingers crossed that it is something easy and it sees the road againg soon