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Old 01-10-2006, 01:53 AM   #1
spoonfedb18a1
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Default EJ20G motorswap problem

any one know where i can send my car to have fixed/finished.

i have somewiring problems in my car( 1998 2.5rs) with a 95 wrx ej20g

the injector wiring and then some more problems.

not really sure i know how to fix and also i have had a guy that has done the swap over helping and we cant seem to fix it.


just need to know if there are anyshops around S.C/ N.C/ or georgia.

money isnt really a big issue. i just NEED TO CAR FIXED LIKE A NORMAL CAR!

the car runs but only on a few cylinders.

we have changed the coil packs and lots of other suggestions but i am fed up with dealing with it and want to send it off to a specialist!


thanks,

Andrew
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Old 01-10-2006, 05:58 AM   #2
swapstar
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hmms. what all have you checked? make a list and post it.

you try ignitor chip? ive had that issue before. running on #1/#3 bc of no signal to sparkazoids. its same as SR20det or Q45
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Old 01-10-2006, 09:46 AM   #3
suberdave
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injector wiring is very easy. all four injectors have + power from IGN. then the ECM gives it a ground one pin for each injector.

here is a couple wiring schmatics if you dont already have a good one:

=====>wiring diagram <===== PDF file with JDM and UK wiring and pinout spredsheet

-=Suberdave=-

Last edited by suberdave; 01-11-2006 at 09:30 AM.
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Old 01-11-2006, 05:39 AM   #4
scobaru
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I have the JDM EJ20G shop manual sorta type of Deal on PDF if you'd like it. you could try to trace it backthe injector is basicly a solnoid it needs power ground to open close it. The shop manual shows how to diagnoise it
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Old 01-11-2006, 08:05 AM   #5
silvialost
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hey scobaru think you could hook me up with that pdf shop manual?
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Old 01-11-2006, 08:10 AM   #6
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I had a similar problem when we were done with the wiring on my swap.. Car only ran on 2 cylinders.. Traced it back to the signal wires for the coils on cylinders 1 and 3.. Turns out the signal wire for the cyl 1 coil was in the 3 spot, and vice versa.. maybe you have something similar going on in the injectors.. Just check for power or signal and ground at the injector and it should lead you on the right path

It was easy to find, as long as you have ecu schematics and good notes of where your wires are at in the harnesses. All you need for tools is really an ohmeter, and you should find it..
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Old 01-11-2006, 06:37 PM   #7
spoonfedb18a1
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o.k..................the injector isnt getting a pulse ground but is getting power just no pulsing ground...........also for sum reason only 1 radiator fan is working.......any clue how to fix that problem...?

lets see......PROBLEMS
~coolant temp sensor.
~that one injector grounding.
~and the radiator fan.
~and now a bad exhaust leak......car sounds like a chopper.......lol


after this is all fixed i can start back putting my interior back in and the car should be like a whole differant car with very great potential.


thanks for all the help guys.
if you have an other suggestions on mods or any wiring problems u came across during this kind of swap, i would be very happy to hear about it.

thanks alot,
Andrew

please note that YES...I AM A NOOB....lol.....but a noob with alot of heart for a scooby and i have taking a leap and gone for a jdm swap for my first swap in any car!
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Old 01-11-2006, 08:29 PM   #8
scoobydorift
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Alll the injectors share a common power, each "signal" wire goes directly from the ECU to the Injectors, make sure that wire is getting a signal from the ECU. You can trace the wire back to the ECU it may be loose or something.
As for the fans, try grounding the "fan relay signal wire" and see if it clicks on. There will be a fan1 and fan2. most of the time I hook my fans up to a switch and controll them myself.
let me know if you have questions
Thanks
Rick
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Old 01-12-2006, 10:18 AM   #9
spoonfedb18a1
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i have gave up hope.........


so i took the beast to IMPORT ZONE

they said they can make the car like new and it was an offer i couldnt refuse....lol


hope everything goes alright!

thanks for all the help guys,
Andrew
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Old 01-12-2006, 04:39 PM   #10
swapstar
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wuss :P

good luck to them. post updates when u figureds
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Old 01-16-2006, 02:48 PM   #11
spoonfedb18a1
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nope they couldnt seem to figure it out.....next stop....BOXER4RACING up in the mountains! maybe they can help out.
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Old 01-16-2006, 05:14 PM   #12
swapstar
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good luck again......
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Old 01-16-2006, 11:51 PM   #13
Jaxx
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dale has been with nasioc since the beginning
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Old 01-17-2006, 02:22 AM   #14
spoonfedb18a1
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so do you guys think that DALE could maybe fix the car, b/c i would hate to have to ship the car there and nothing happen.........i have faith in them, just money doesnt grow on trees...lol

will i need to take the jdm wiring diagrams with me...?
or hasnt he delt with this kind of stuff b4..?
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Old 01-17-2006, 01:23 PM   #15
Jaxx
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i would suspect that he has done it before but bringing the FSM is always nice ..if you don't have a complete version i can hook you up with one
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Old 01-17-2006, 04:39 PM   #16
spoonfedb18a1
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i have a complete one off of ravensblade that we orderd.

thanks for all the help but if u guys can think of anything else that may be causing this problem please let me know so i can get my car back out on the road.....it has been sitting for over7 months.

thanks alot guys,
Andrew
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Old 04-19-2006, 12:29 AM   #17
spoonfedb18a1
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yep my car still isnt fixed............it has been over a year now............amy one else got any suggestions on what could be telling the ecu not to send out that ground...???

the ecu is fine the injectors are fine.

we have also ran a straight wire from the injector to the ecu that way there are not cuts in the wire to keep it grounding out.................and still it doesnt work.....something is telling the ecu not to ground that injecor......?!?!?!?

what could be grounding out in the harness....???? only one wire we spliced into the others at the ecu and that was the vehicle speed sensor and it is all good.

SOMEONE please help me out.

Andrew
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Old 04-19-2006, 04:28 PM   #18
WallyKincaid
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Could you just ship to east coast swappers? Or somewhere in north florida if its easier? Ship it then drive it home?
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Old 04-19-2006, 04:32 PM   #19
rob
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Quote:
Originally Posted by spoonfedb18a1
yep my car still isnt fixed............it has been over a year now............amy one else got any suggestions on what could be telling the ecu not to send out that ground...???

the ecu is fine the injectors are fine.

we have also ran a straight wire from the injector to the ecu that way there are not cuts in the wire to keep it grounding out.................and still it doesnt work.....something is telling the ecu not to ground that injecor......?!?!?!?

what could be grounding out in the harness....???? only one wire we spliced into the others at the ecu and that was the vehicle speed sensor and it is all good.

SOMEONE please help me out.

Andrew
Dude! I tried to help in two of your other threads and you have never answered my questions.... I am a EE and would be happy to try to work it out over the web, but you gotta put some effort in and respond.
-Rob
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Old 04-20-2006, 12:19 AM   #20
spoonfedb18a1
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sorry rob, i didnt have the car for a little while it was in the shop and i didnt want to bother ppl while i didnt have it to look at, but when the car is on it is 12v at each pin at the ecu, but still no ground coming outta the ecu for that one injector.

sorry bout no response,
Andrew

also it is too much for me to send it there and gas is way to high to drive back down. hehe
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Old 04-20-2006, 11:37 AM   #21
rob
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Here are my questions, posted again;

How are you checking for the pulsed ground signal at the injector pin?

Try this:
Unplug the ECU; measure ohm between the pulsed ground pin AT THE ECU CONNECTOR and a chassis ground point. It should be infinite.

If that is ok;

Unplug the ECU; measure resistance between the pulsed ground pin AT THE ECU CONNECTOR and the 12v injector reference line AT THE ECU CONNECTOR. It should be the resistance of the injector coil. Somebody will have to help me on what this should be...guessing 10-14ohms

-Rob
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Old 04-20-2006, 04:21 PM   #22
Jaxx
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14 ohms
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Old 04-27-2006, 11:43 PM   #23
djwhetzel
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I have a similar set up. I have a 1998 2.5 RS with a 95 Legacy EJ20G. I fought with the wiring for 2 week straight spending about 15 to 16 hours a day on it. After getting it half a$$'ed I blew the engine. Cylinders 1 and 4. So I decided to go stand alone. I bought a Link System LEM V5 and everything is great now. The install was fairly straight forward and only took about 1 to 2 solid days of work. The car runs great and I have total control over the engine management (for future upgrades). Some people may disagree with me, but I say if you can afford it, go stand alone and save your self a lot of head aches.
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Old 04-28-2006, 10:12 AM   #24
erice1984
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I did my own ej20 swap with a 2002 wrx engine USDM. Let me tell you, I had an easier time with the electronics than I did actually getting the engine to run right (came out of a rolled wrx)

If I had to do it again I would buy an engine that I knew ran... :LOL:

anyways, as far as electrical, if you get stuck, Isolate circuits (uplug everything) and start using an ohm meter and check that everything is isolated, IE inj ground only has continuity between connector, pole # and the other end, no shorts to ground or open, or short to power etc.. Yeah its long and drawn out, but it will give you solid defined answers to what condition your progress is in.

Another test you can do is turn KOEO and do voltage drops, and that will tell you what condition your connections are in, high resistance, not enough voltage to sensor or actuator..
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Old 04-29-2006, 01:04 AM   #25
spoonfedb18a1
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thanks guy for the help i am picking my car back up tomorrow and then i can run all the new test and ifo you guys have given me.

i will keep you all posted when i get it back and run the test.

thanks for the help,
Andrew
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