Definately have an issue with my unitronic tune. chime in unitronic

[Mindfault]

ill be looking for that thing forsure though probably tonight after the get together

[Vegeta Gti]

soooo....hardware/component issue.not software...

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[groggory]

im pretty sure it goes into the box next to the waterfall. the one with i think 2 relays in there. and it seems like the junction is a relay, because it says "87a" which is a leg of a relay. but it's so F'ing hot here. i dont wanna be outside tearing thrtough wiring harnesses. haha. this is just crazy though

When you trace it out, please snap a pic and post it up. This could be very handy for other people out there.

[groggory]

soooo....hardware/component issue.not software...

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Yep

[Mindfault]

[Mindfault]

I followed that diagram and it says it goes to fuse 43 in the fuse holder. That is where E30 end up in the wiring diagram.

[Mindfault]

It says. E30 is connection (87a), in wiring harness enginr

[groggory]

I think you're mistaken. I don't see blue/red wire in that image.

I think E30 is possibly a bundle of wires. I think you need to find another page in the bently for E30 where a blue/red wire comes out.

[Mindfault]

im on alldata right now haha, but im scouring it.

[groggory]

im on alldata right now haha, but im scouring it.

On the upside, the wire is a thick wire roughly 12 AWG in size...should be easy'ish to pick out of a bundle.

[Mindfault]

no doubt, the last place on the diagram that i see bl/ro coming out of E30 is G130, oxygen sensor behind three way cat so secondary o2. but i will be following that wire to wherever the hell it goes tonight when i get home, so there is just high resistance, a bad connection or something

[Mindfault]

and the ecu is fine? hopefully

[groggory]

I think the ecu is ok

Just work on figuring out the blue red wire path for now

[Mindfault]

kk will do man thanks. ahaha ima have to paypal u like 20 dollas for a 12 pack haha

[Vegeta Gti]

ECU should be good to go, but all fo that wiring being mixed up the ECU has been saving it self from revving and so on due to the fueling and other issues related.

clean that **** up and have at it man. i know that i ran some racegas, was stoked to get some C16 in the car for the first time, little did i know, the place i got it from had it sitting in an open(small opening) 55gl drum for two years(found this out when i went back and was like let me see the drum). my car wasss pissed, it ran great when i put a touch in to get the maps adjusting, but once i went full with it, and no pump mixed in..car wouldn't rev past 5600,misfired and was generally angry. tried again later with known good C16 on a mix and had no issues. anyway!!!

point i am making is our ECU's will save the motor if it can, and it was doing just that, hence the lackluster results and driving,etc.

[Mindfault]

no doubt. i will be tracing that pesky wire tonight when i get home hopefully i can find the culprit of my headache and drown it. i wish wires had souls, cause id take it away from it haha. but ill post the results

[Mindfault]

Grogg! Those wires is what i was saying. Im getting readings. Now. Actual is close to requested n it runs way better. Now i need to know why rev limit is still low. And no more CEL

[groggory]

Grogg! Those wires is what i was saying. Im getting readings. Now. Actual is close to requested n it runs way better. Now i need to know why rev limit is still low. And no more CEL

Woo Hoo!

Where did you find that 12V wire? Where was the issue?

Give us the background, then tell us the current set of problems :-)

[Vegeta Gti]

check for echo resins of the vss,, wheel speed sensors, etc

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[Mindfault]

Im sorry, i do not know what echo resins are. Please explain, and i will do. I need to do some logs, grog u still want me to do some fuel trim logs? She still smells a bit rich

[Mindfault]

But it not longer looks like a diesel

[groggory]

Im sorry, i do not know what echo resins are. Please explain, and i will do. I need to do some logs, grog u still want me to do some fuel trim logs? She still smells a bit rich

Yes. Do some logs. Let's see what things are looking like.

Clear your codes (to reset fuel trims)

Then go drive for 20 minutes

Then do 2 pulls 2k-6k

block 001/ 031 / 032
block 001/032/020

Let's see what things are looking like.

Also, where did you find that wire in the loom? Please tell us more on how you fixed it. :-)

[Mindfault]

So THIS is how BT power is supposed to feel. Lol.

[ballergti]

What was problem. You never said how you fixed it?

[groggory]

What was problem. You never said how you fixed it?

The heater on his o2 sensor wasn't working right. He traced out the wire and fixed it (as I'm having you do in your thread). The only thing he didn't do was tell us where the wire went.

I think the wire is going to the fuel pump relay socket.

I need you to do a bunch of readings so we can figure it out

[Mindfault]

the wire went to fuse # 43

[Mindfault]

and everywhere else that is shown on those wiring diagrams above.^ whats ur issue bro? same as mine was? my o2 sensors werent reading at all. i had a short in the wire, and in turn blew fuse. i had to replace the wires, then replace the fuse. it took me awhile to figure that out, and i did have to take part of the harness apart, so have fun bud

[Mindfault]

also, even tho the o2 sensors are reading, the car still runs a bit on the rich side

[groggory]

also, even tho the o2 sensors are reading, the car still runs a bit on the rich side

Let's do some more logging and get that car running perfect! If you'd down for doing more diagnostics, I'm down for doing more helping.

the wire went to fuse # 43

If you wouldn't mind, would you mind describing the wire path that the o2 heater wires take? Every little junction it makes, where the fuses are, etc? It's a pretty long snake's path I think and your input here would improve my understanding of the o2 wiring harness.

[Mindfault]

Yes, groggory i will do more logging, currently im waiting for integrated's valve cover/crankcase vent things because my stock 90* elbow melted, because my alternator 12v+ wire grounded itself to the oil feed line. Melted that 90, my oil pressure switch, my brake booster line, my boost gauge line and my iat sensor. Small fire monday that should all be worked out.

[Mindfault]

If i remember correctly, the wires go to all that they say in the diagrams. Mine currently are coming up by a/c lines used to be. Up into the rain tray to their respected inputs to the ecu. They also go to fuse 43, in the fuse panel inside car. Also, they connect to evap? Im not sure, let me look over the diagrams again. And i will get back to you!

[groggory]

Yes, groggory i will do more logging, currently im waiting for integrated's valve cover/crankcase vent things because my stock 90* elbow melted, because my alternator 12v+ wire grounded itself to the oil feed line. Melted that 90, my oil pressure switch, my brake booster line, my boost gauge line and my iat sensor. Small fire monday that should all be worked out.

Glad you caught the fire before it got out of control. I lost my fun little black GTI to an engine fire while parked. I don't wish that on anyone.

[Mindfault]

For sure. As of now, im trying to find the necessary parts to vr swap my mkii

[Big_Tom]

Glad you caught the fire before it got out of control. I lost my fun little black GTI to an engine fire while parked. I don't wish that on anyone.

[Boostedwolf]

mindfault knows about engine fires my car caught fire a few months ago. no fun! never use an atp fuel rail!!!