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UNYSOC.ORG - Upstate NY Subaru Owners Club

November 21, 2018, 10:04:48 AM
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Author Topic: misfire, no spark, misfire, upstream o2. popped fuse. accessport screen burnout?  (Read 4838 times)

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Offline BlackParis

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Styles said it.


Bad ground somewhere.
'03 Silverado 1500HD 4x4.. Black on Black leather, DiabloSport tune, 6.0/4L80 Daily - 218,000miles
'92 BMW k75 moto
'81 BMW 528i - Black, tan leather, Weekend Cruiser - 102,000miles -- oo==00==oo
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Offline Pitman

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I didn't.  Does your screen work when you plug it into the computer? 

Also update I went to check my grounds and started the car up and the cel went away. Car drove perfect. Everything was working right and I put around 70 miles on it without a problem. This morning I started it up and it had a rough start and the light came back. Just my luck. At least I know that there is only one problem and it's most likely a ground from what I can tell. A coil pack can't go bad and come back again ...or can it.


Same thing happened to me.... my cel randomly shut off.

I am going to take off the grounds and clean them up. I hope that works

Offline RE543

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I cleaned the main harness ground behind the engine and to be safe put a new negative terminal clamp on and it went away so hopefully that solves my problem for now. A whole lot of symptoms pointing me in all sorts of ways. Thanks for all the replys. Now to get this accessport sorted.

Also anyone here do a ground kit? Where you just add grounds in certain spots to aid the oem wiring?
05 wrx, 02 7.3 powerstroke. Subarus and counting 12plus

Offline RE543

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Welp.....moved the car are the ominous orange light returns.
05 wrx, 02 7.3 powerstroke. Subarus and counting 12plus

Offline Turbaru

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What up homie?  How's hill climb?  I'm stil around.  Mostly spectacting.  Chasing my 4 yr old keeps me busy.  Looking to make a return to motorsports later this year.

Chillin'. Climbs are like the coolest shit evah, right up my alley! Did well last season, off to a rough start this season! Hope you get out there sooner then later.

Orange light returned huh? Are you sure you don't drive a VW!?!
A guy on here "KLarowe' was doing grounding kits a couple years ago but I havent seen him on here recently. He is good with electrical stuff, he did my kill switch install !!
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Offline Kavik

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ages ago i picked up all the stuff needed to do a few grounding kits, then a couple people bailed, and i flaked on one or two...... long story short, I've got wire,  ring  terminals, heat  shrink, in line fuses and even aftermarket battery terminals

what I'm short on is time, but pm me and we can try to figure something out
-Daryl (Albany)                                                                                   ಠ_ಠ
['14 Mazda3 SGT]     ['03 Sonic Yellow WRX Wagon]     ['05 WRB WRX Wagon]     ['02 PSM WRX Sedan]

Offline RE543

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Orange light returned huh? Are you sure you don't drive a VW!?!
A guy on here "KLarowe' was doing grounding kits a couple years ago but I havent seen him on here recently. He is good with electrical stuff, he did my kill switch install !!

Ironically I'm driving a vw as a daily till I figure this out. Electrical is the bane of my existence and it's always what goes wrong for me. Like I said I'm trying to figure this out myself before giving up and bringing it back down to steve at quantum.  I'm afraid of bringing it down and having it fake fixed like keeps happening not that quantum is capable just this car loves throwing curve balls.
05 wrx, 02 7.3 powerstroke. Subarus and counting 12plus

Offline RE543

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ages ago i picked up all the stuff needed to do a few grounding kits, then a couple people bailed, and i flaked on one or two...... long story short, I've got wire,  ring  terminals, heat  shrink, in line fuses and even aftermarket battery terminals

what I'm short on is time, but pm me and we can try to figure something out

Pmed
05 wrx, 02 7.3 powerstroke. Subarus and counting 12plus

Offline RE543

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And we're back to the same symptoms as the start. Giving it one last try today and if I can't figure it out I'm throwing in the towel and bringing it to steve. Hopefully it'll be done by wicked big
05 wrx, 02 7.3 powerstroke. Subarus and counting 12plus

Offline Kavik

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have you scanned the codes again recently?
was the O2 sensor you replaced a new sensor or used? maybe you got a bad one?

You can download the factory service manual here: http://www.wrxinfo.com/service_manuals/  That will give you all the details you need on the engine bay wiring and stock ground locations.  It's a bit convoluted and a headache to trace through all the pages sometimes, but it's all in there somewhere if you take it step by step, along with basic diagnosis procedures, if you need that

let me know if you still want to try adding the extra ground wires.....but you still need to get the stock grounds sorted if they are actually part of the issue

Another tedious task might be checking the wiring harness for shorts or broken wires.......doesn't sound fun though
Or see if you can find someone doing a part out and just pick up another harness and swap it in.  Maybe there was more to it than just the corrosion on the connections?
-Daryl (Albany)                                                                                   ಠ_ಠ
['14 Mazda3 SGT]     ['03 Sonic Yellow WRX Wagon]     ['05 WRB WRX Wagon]     ['02 PSM WRX Sedan]

Offline stylesrex

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Anybody wanna buy this pile? Made 318 at quantum.

I'll buy it for $20 :)

Offline hydrochloric

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Offline RE543

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If I was still as pissed at it as I was I'd consider 25$.
So right now the car is alright.  Here's my prognosis of what happened using my limited knowledge.

Hit boost and a dirty ground or bad coil pack clip came loose and caused the missfire. Limping to where I could work on it caused the unburnt fuel to ruin my o2? Once I got it running on all cylinders again by getting that clip all the way it driving around with a bad o2 only sealed that sensors coffin I think because the light wouldn't go even if I reset it. Finally got a new sensor and the light was clear able but still came back. Cleaned all grounds and fixed the problem for a weekend. Then the coil pack connector came loose again. Didn't realize how bad it was.  It's ghetto but I clipped it in and rubber banded it to the coil pack so it can't wiggle lose. Still have a light. I checked everywhere and cleaned all my grounds and nothing.  Car ran alright but just over fueled alittle but not too much like before. Couldn't figure it out then but just decided to scan the code with my buddies scanner before giving up. Was the forward o2 code again.  Cleared the code and was expecting it to come right back but it didnt. Put sround 100 something miles on it since then and it has been fine so far. Knock on wood. I don't know if the problem is solved or not but I hope it is. This has been a mess. But as of right now car is running right and should make it there Sunday. When if breaks down there will hopefully be enough people around to help me there haha.
05 wrx, 02 7.3 powerstroke. Subarus and counting 12plus

Offline hydrochloric

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If there's one thing I've learned from my supercharger build, it's that you can come up with as many theories as you want, you'll never know for sure if any of them were right, and they'll all change as the car does its damnedest to outsmart you.
-'00 BRP 2.5RS- rustbucket DD with SUPERCHARGED! junkyard engine  :D  -'66 VW Type III 1600 Squareback- Survivor, 42k miles  -'83 944- mostly-un-broken track car  -'50 Hudson Commodore 6 TSD rally car  -'93 Audi S4- New DD.  Eventually.

Offline RE543

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I hear you there.
05 wrx, 02 7.3 powerstroke. Subarus and counting 12plus
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