So here is my Suba story.
I got this car July '12 from a buddy of mine that was into VW beetles. It is a 97 Brighton coupe 5sp awd with wrx brake and spring package all four corners as well as having an ej251 already swapped in. Also had wrx seats f+r, 01 rs bumper. Sale price of just $1000. Rode my bike down to get it and drove it back...well limped back. The swap was done by the previous owner and no wiring was touched to make it work. Giving more than 5% throttle caused it to bog and die out horribly
Appeared to have very little rust, just had a little around the one side of the windshield frame, but had a very rusty smell inside.
hmmm was thinking about that. the tank was completely dry for a year when i first installed the swap. the few gallons i added may have picked up gunk left over or just gone bad.Going to add 5 gal of premium and cycle the fp a bit. from africa so any gas is good gas to me.lol thanks for the tip.
Im doing a little logging right now and the af is pinned to 14.7 and there appears to be 0A for current so im really leaning toward wiring if the gas doesnt solve the prob
car drives ok tho...fast enough to slip the tiny 1.8 clutch.
put fresh gas in-no dice
tried reflash-nope
getting 14v at idle on pin 4&5 plug b84
pulled the harness apart to have another look at the wiring and so far everything looks good. o2's have power and everything....stumped
ok so turns out this had nothing to do with the o2 or the o2 wiring at all.
As i had mentioned before that portion of my wrx harness was uncut/unmodified.
I read this thread:
oxygen sensor problem - Page 2 - 1990 to Present Legacy, Impreza, Outback, Forester, Baja, WRX&WrxSTI, SVX - Ultimate Subaru Message Board
And decided to check the ecu sensor grounds. this happens at ecu pin a7,a15,c1.
No ground on a7 or a15(black red)
no wire at pin c1
I ran my fuel level ground directly to these to a7/a15. its ecu ground, so i thought the ecu grounds the fuel level sensor when the key is on.
Turns out the ecu needs a ground here...always
Pin c1 is the mt/at identifier pin for the 04wrx.
Ran a make shift ground to all these and bam no more cel!!!!!
Since my last post I have about 2000 miles on the car and the clutch is done.
I dont want to replace the clutch on my 212000mile old transmission so id like to upgrade to something that might hold the power a little better. I have a 2003wrx tranny but the tail housing bearings are toast.
So ive been researching what its going to take to get that converted to 4.11.
Why 4.11? because i have a 4.11 rear diff that is lsd and my 3.9 one is old.
Thanks a lot man. I get the biggest smile when I walk out of the store and see it sitting there waiting for me.
Wish I could make my mind up about the transmission. I have a wrx tranny all pulled apart...could go 4.11 or 3.9. Either way I'm dying to put a clutch in to find out just what tis thing can do.
Transmission time! Started by gutting the wrx case, cleaned half of it. Its not rust, its not corrosion, its not grease...its all of the above?
Decided to put the case pieces back together. Handling the case halves sucks!
They are sharp and awkward and its easy to damage the mating surface that will keep the oil in. Its looking like I will stick with the 3.9. I cant find a deal on a 4.11 tranny to steal parts from and id like to confirm that the internals are working before buying stuff for a used unit.
Well I got the 03 wrx trnas in and have been driving it around for about 2 weeks now.
The car absolutely rips!
Friday night I decided that I would wire in pin c1 to a7(b134) and a15(b134) to a proper engine ground, soldered it all in nicely and boom p0031 is back!
Got the ac re-filled and discovered that it stays on constantly unless you push the button. yep thats right, its on when the button is off.
Also a7 and a15 are supposed to run to b100(pin1) and then f60(pin16) there is ground at both ends of the b100 plug but not at a7 and a15
So something is horribly wrong with the way my harness is wired...I am shocked that after all the tinkering and driving I've been doing that it has not caught fire.
dash is currently on the lawn
SUPER SAD FACE
Found a network of grounds that had no ground so ive permanently solved the p0031 problem.
Still having the ac issue tho.
Also got a fuel temp sensor input high, wondering if they are related
trying my hardest to figure this out but man its difficult.
Yea man, im in way over my head with the wiring. I knew I was going into it but its the path I chose due to financial limitations. Im not too upset. Im so close i can taste it. Been studying wiring diagrams, its been raining all week I have not touched it.
about 6 weeks ago i came to my senses and sent the harness to I-wire. Brian did a great job of cleaning up my mess but i still have a problem with the AC.
The ac comes on when the button is off!!!!! this is so unbelievably frustrating! I cant find why its doing this.
Ive tried a different button
Ive traced-retraced and then traced the wires again. still no closer to figuring how how to correct it or even why its doing it.
The fact that it cuts voltage to the relay when the circuit is closed is just mind blowing.
How the fu%k is that even possible.
Pulling my hair out. Please somebody help me before i go bald.
been a while since i posted.
On the R58 plug(on the fuel tank)
04wrx- pin 2 goes to ground
98RS-pin 5 goes to ground.
I grounded pin 2 and now i have a functioning fuel gauge.
It goes all the way to full and seems very accurate so far.
The wrx ecu does not like it. Throws cel low input when near empty and high input when full.
So what you are saying is you initially wired incorrectly which caused the weird gauge behavior and that using a 0-100 Ohm impreza sender will allow proper gauge function?
Edit: Just saw your post on my thread. How do I erase this message? I can't seem to find the delete part of the edit/delete message.
Your Subaru is an inspiration to fix mine from the body up. I'm terrified to look and see what the rust has done to my poor Subie, but it's something I definitely need to do.
Thanks, shes not perfect but i still grin when i see it parked and waiting on me.
Since getting the wiring back from Iwire it has been running great. Still no AC but its beautiful out. Wrx transmission and clutch are holding out really well.
Time to beautify the engine bay and on to the suspension.
I have a lean code popping up every now and then. Most likely due to the up pipe and SPT intake.
Tried a stage 2 map- according to logs i hit 29psi on the first drive...removed stage 2 and quickly installed a boost gauge
Back to logging and adjusting
Re-scaled my maf and got rid of the leaning. afr corrections are down to 6%
This tuning with the laptop is completely new to me. Sooooo much reading. so much more to do.
This was the first log. It got a lot cleaner still going to log and get the afr's lower
Got a 50mm bosch boost gauge, I like the bosch brand it was super cheap and its one of the smallest most oem looking i could find.
So now i need a dash pod...none of them seem to be 50mm all 52+
Completely obliterated my dash cubby lid...making this turd
looks like poop because its old Kitty hair that got water in it. have no idea how it actually kicked off and hardened. The activator cream was like silly putty with jello bits in it.
Lots of imperfection... no problem, just spackled away. dried ,sanded then vaselined
cut some cloth and made a little layup plan.
wet it all out
product
In all it turned out really well only 2 defects to fill. spackle was still soft so couldnt really sand it. Next time i gotta use something way quicker drying.
Car has been running great, sounded a little different so i thought i would check the fluids, found a very sad filter
Took that as a good opportunity to do some maintenance. So timing belt and pulleys.
It was a real bitch as all the bolts had siezed and the timing covers had to be broken off.
So while waiting for the cam shaft tool and cam seals as well as new timing covers i pulled the down pipe off and put a bung in it.
nice blobby mig job.lol
And there you have it. Stock WRX STI dowmpipe with aem O2 bung. I mounted mine a little close to the turbo because im a moron. i went 6" to the hotside fan
also threw on a perrin crank pulley
After many many sanding and filling we have primer!!!
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