Just installed installed afc-neo...now my rb25 is dead, and I'm sad.

[kpnitrl]

Sooo, I just finished installing the afc-neo in my rb25det powered s13, followed everything exact. Instructions say to turn just the ignition on and set it up before turning on the engine. I switch on the ignition, all the regular lights turn on the gauge cluster and I can hear my fans going. I go through the setup and then came time to crank it.

As soon as I turn the key, all power goes out. I take the key out, disconnect the negative and go through all the afc wires. Nothing, I check ingition wires and all the fuses, all fine. So I hook up the battery again and try to turn it on but the only signs of any power is the clock, lights and the horn.

Ideas? Anyone? Thanks!

[Cjmartz2k]

fried ecu?

[robbie2883]

^^^^ either that or blown relays (highly unlikely) go through your wiring again but something deff got damaged. weather it's a fuse or something more serious

[kpnitrl]

A fried ecu was my first thought. But since there was no power anywhere else I thought t might be an ignition issue. Any way I could check the ecu? Oh, and I tried replacing the relay by the ecu. Thanks guys

[Sil240]

Why don't you try unhooking the afc-neo from everything and putting it back to the way it was.

That way you have 1 less variable.

Then once you get the car running again make sure you are super careful putting the afc back in.

[Joe]

Why don't you try unhooking the afc-neo from everything and putting it back to the way it was.

That way you have 1 less variable.

Then once you get the car running again make sure you are super careful putting the afc back in.

This is the correct answer.

[kpnitrl]

damn, I can't believe I forgot to mention that. After all the power went out I did unplug it and tried turning on the car. But still there was no electrical power.

[Joe]

unplug it? or unWIRE it?

[yotik]

sounds like something wasnt grounded during the install. did you check your grounds?

[kpnitrl]

JoeI unplugged the two wires that require plug connections, and then hooked it back up to the ecu. Then all of the other wires that were hard wired were removed.

RotikYeah I went through all of the grounds. Also, when I initially wired it all up when I turned the ignition switch, the afc turned on just fine. It all took a dump when I tried to turn on the car. (The only ground not grounded now is the afc (since I removed it))

The only thing I can think of is the ignition somehow lost power put I went through all of the fuses I can think of. Cause when I was doing my turbo timer install as I was going through the wires, I noticed if one of the wires was unplugged none of the lights would turn on, on gauge cluster. Just as it's happening now. But that install was not recent and the car was working fine after that. But regardless I went through all that wiring too. And no dice.

[Jadesr20det]

Did you leave any of the wires bare w/no electrical tape/shrink/butt connectors? one of the wires could have touched and created a short which would be not so good for your ecu

[kpnitrl]

Nope. As soon as I finished a connection I would insulate it. Then at the end I double checked each wire.

Idk, I'm starting to think the only thing that I can do is get another ecu (and that bums me out even more, lol). Anybody know if s1 and s2 ecu's are interchangable? (I have an s2)

[RustspecS13]

When my maf wires shorted out on my turbo a couple days ago it fried a trace on my ecu. All i had to do is pop off the cover and solder in a jumper wire. Its really obvious as its by the right side of the connector.

Even if you don't feel comfortable fixing it your self you can at least take off the cover and inspect it.

~Alex

[yotik]

are you using butt connectors? those things suck balls. im no expert but everything youre saying sounds like a short. check all ur wiring and the ecu somethings not connecting. if you have power to the afc and nothing else youve either got a short or somethings not grounding. heres some possibilities ive been thinking about:

if power to everything before you turn the key but then no power after turning the key= ground problem

if power to everything befre and after turning the key= short (bad fuse, bad diode etc)

if power only to afc before and/or after turning the key= short

dont panic (like i usually do) its probably something simple

that really sucks man hope you get it goin

[gawdzilla]

this is a long shot, but double check all of your large gauge connections, like battery, starter, alternator. I had an issue once where when I went to start the car I lost all power.

turned out one of my large connectors to the starter was a bit bent and too close to the starter housing. it eventually arced when i tried to start do to the amp draw and welded itself to my starter housing. caused a bad short and fried my battery.

good luck finding the wiring issue. definitely start with eliminating the safc and try to get it working stock again.

[kpnitrl]

thanks guys.

Fried a trace in the ecu? Sorry for the noob question but what's that mean?

It's not really butt connectors, the afc comes with connectors that just tap into the ecu wires. The last time either the car or the afc had power was when I tried to crank it. After that (now) I get nothing anytime. LOL, I'm not panicing, I have bigger things to be concerned about, plus it's not my DD.

Hmmm, large connections eh? Didn't think of those, I'll have to check that.

Thanks again for the continuing help guys. Oh I font remember if I did but did I mention that the lights are still getting power? Weird