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Old 02-03-2009, 03:34 PM   #1
luka
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1993 Impreza WRX JDM
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I have a 1993 EJ20G with Coil on Plug. I'm having a hell of a time finding a new set... Anyone know which cars them?


someone was telling me SVX had them once and that the new STi


Thanks guys!

and the reason I'm looking for these is because under boost or higher RPM or heavy load the car sputters like a mofo. and the harder I try to push it the more violent the sputtering gets until there is some sort of electrical loss and the RPM gauge drops to 0 and then bounces back up.

I'm assuming it's the coils the plugs are brand new (v-power ngk without gapping)

EDIT: I sincerely apologize, I just read the sticky!

but maybe to continue -- can anyone offer another possible problem that would be causing this type of sputtering other than coils?
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Last edited by luka; 02-03-2009 at 03:40 PM.
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Old 02-03-2009, 04:46 PM   #2
rob
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It tastes like burning

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nope. Do the coil conversion, your problems will magically disappear

-Rob
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Old 02-03-2009, 08:19 PM   #3
JDMWRX03
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Funny, I have the EXACT same problem in my 93 WRX (this is Mark from Toronto). I'm switching to 02 WRX coil packs, hopefully should cure this.
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Old 02-03-2009, 10:20 PM   #4
Gcoap
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I just changed out my coils on my 1993 wrx to 02 wrx coils runs way better. Had the exact same issue now no more. It took me about 3 and a half hours all in from the time i pulled the old coil packs till it was running.
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Old 02-03-2009, 11:58 PM   #5
luka
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Mark -- if you find some coils let me know... I'm having a hard time finding them...
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Old 02-04-2009, 02:43 AM   #6
sniper512
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I did the conversion on my 93 WRX as well...........cured it. Its super easy if you have a bit of wiring and soldering skills.

I put a set of brand new NGK lasers gapped down to 0.028 and after the coil conversion I still had a little blowout changed the plugs to an one step colder NGK platinum and it was all good.

I have two 93 WRX coils that are in good shape you can try from when I did the conversion. The pigtails are cut, but I left enough so you could attach yours to it. Free just figure out the shipping

Last edited by sniper512; 02-04-2009 at 02:51 AM.
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Old 02-04-2009, 05:31 PM   #7
azn0boi04
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Quote:
Originally Posted by rob View Post
nope. Do the coil conversion, your problems will magically disappear

-Rob

just follow the directions on the sticky...
i am about to do them friday or something..
i just got my sti coilpacks today...
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Old 02-04-2009, 08:17 PM   #8
94 GT
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I'm running a EG20G STI off the ej22T comp (Iknow I know) it is also running off the stock coil pack!!! and when it is boosting what little there is I can smell like raw Gas and there is like no more power than at like half less pedal!! you guys think that tha is the weak spark offthe coil and the crappy timing advance off the stock comp!??????? you think that the 20g's cop's will work off the wasted spark system in the ej22?????? could I get a comp for cheap????? i'm in canada!! but that would be nice!! how would I get the auto to work though (I can't belive I actually like it) but any help would great!!

Thanks JESSE
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Old 02-04-2009, 10:03 PM   #9
beaviscih
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Let me know if you need a set of WRX coils, I've got a spare set sitting in the garage. I picked up a harness and coils so I have an extra set. I haven't done the conversion yet, but I'll get to it once the car is up and running.
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Old 02-17-2009, 04:58 PM   #10
luka
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Hey guys,

I'm starting my swap right now... I have "Perma Oxy" multi-metal Epoxy. Says it has Epoxy Resin, polymercaptan.

Just want to make sure this stuff is NON-conductive. Can anyone confirm?

Thanks!
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Old 02-21-2009, 05:33 PM   #11
luka
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Hey guys,

so I just finished the coil conversion and it will, made my problem worse

at about .3bar I hit a wall, the "anti-lock brake" light turns on and the engine pretty much completely shuts down.

any idea? haha I thought this was suppose to fix it!
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Old 02-21-2009, 06:07 PM   #12
Matt Monson
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The ABS light is coming on? You've got an electrical issue. There's a wiring mistake or a ground you forgot to ground.
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Old 02-21-2009, 06:35 PM   #13
luka
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it only comes on with the fuel cut/wall I hit.

The only hacking I did was the ignitor bypass and I made sure everything was done properly and everything was tied up properly.

I didn't however, ground the extra black wire coming off the ECU side since the sticky said it wasn't necessary. aaahhh this is frustrating. it's only under boost?
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Old 02-21-2009, 07:38 PM   #14
luka
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I went for another boot and and I noticed that the engine overheat light? flickers as well. Literally as if the motor has shutdown or something and then comes back to life.

It also happens if I rev the motor aggressively in neautral so it's not just a boost issue. Seems like the second I start generating power over 3k rpm it takes a dump.

Ugh

Last edited by luka; 02-21-2009 at 08:57 PM.
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Old 02-21-2009, 09:27 PM   #15
Matt Monson
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You mean the temp sensor gauge? That's a wire that a lot of noobs doing a swap forget to ground. Your signature is confusing. Is you car really a WRX or is it a swap?
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Old 02-21-2009, 09:39 PM   #16
luka
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1993 Impreza WRX, JDM, so it's not a swap it's the entire car.
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Old 03-06-2009, 12:31 AM   #17
random112
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Default resloution?

Luka

Did you fix it up rite?

give us an update - Have the same issue here - considering the conversion...
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Old 03-06-2009, 01:03 PM   #18
sniper512
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Matt you should see when I come down to the states with my RHD people think you are crazy its pretty fun. This summer there is about 15 cars going on a road trip to the States all RHD should be interesting.
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Old 03-06-2009, 01:10 PM   #19
random112
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my fave when driving in the us is to have the passenger reading the newspaper (or my gf knitting works good too) in the pass seat while tooting along in the slow lane. People passing you in the fast lane do double takes - when they see the "driver" reading the paper while on the freeway...
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Old 03-06-2009, 06:06 PM   #20
luka
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the coil conversion worked, I'm having other issues now though. =(

After a solid two hours on the highway the car started fully boosting and pulling hard. then it went away, and then it came back, and then went away again.

I threw a 45 for no apparent reason, and it goes into limp randomly as well. I check codes after every drive and I'm half boosting even with an OK.

oh, and my mileage since I did the coil conversion has more than doubled. hah!
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Old 03-06-2009, 06:17 PM   #21
rockcrete
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Clean your BCS and check all connections between that, your MAP and the wastegate.

Also, if your plugs are fouled from the prior bad coils, you may misfire under boost and it may not be that apparent except that you won't make as much boost.
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Old 03-06-2009, 07:13 PM   #22
sniper512
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Okay also check the TPS voltage should be 4.7v at closed and 0.9v at WOT. Also have you replaced the lines for the BCS? If so did you remember there is a pill in it to limit flow? Also what plugs and gap are you at? I used NGK PFR6B(OEM) at about 0.030 and they worked awesome.
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