I am having multiple electronic problems.. Help?

[devilsdope]

Ok I'm new here, not too car smart but I've found a Blue wire with a red strip on it that looks freshly cut or pulled off or something because it's cleaner that the rest of the engine bay. Question is what should this blue/red wire be connected to? It's on the right side, and I have pictures on my phone I can post. It's a 1995 240sx with sr20det swap. Sadly this isn't the only thing.
It all started when I was driving home on the freeway and some smoke came out of the air vents, turned the heater off and no more smoke. Later I went to drive to work and the right blinker was on both the actual lights and dash but its solid. Even happens when when the keys are out, and wont blink anymore. A mile down the road and it started to to drop rpm's and power. I got to a red light and stopped and rpm's were low so i gave it some gas and as soon as I went to take off the car stalled. Upon looking at some fuses I've noticed that my EGI 7.5amp fuse was blowing instantly also as well when the car was off.
Today I found the blue/red wire, egi fuse isn't blowing instantly anymore and I also found and switched the blown ALT S (Not sure what this is) fuse. I'm not sure if changing the one fuse is keeping the other from blowing.
Also my brake light in the dash stays on usually and now it dims and flickers brightness and my airbag light isn't flashing. Although I think the airbag flashes because I don't have a drivers air bag. I bought the car a month ago and had none of these problems.

[frapjap]

Welcome to NICO and congrats on your S14 SR purchase.

I'm not well versed in SR engines, but am mechanically inclined.

The first step is to post up some photos.
Next, see if you have bad ground(s) somewhere with all of those issues.

After that, use that blue/red wire to try and find where it belongs and what happened. Is it a clean break? Burnt? Corroded? It may not belong anywhere and may be that way from the swap (depending on who did it and how clean their work is). Start by using its natural contour and shape to see if it could connect to anything in the immediate area. After that, pull it to its full extension and work out to in, up to down to see if it came from anywhere in the 360 degree globe shaped radius.

Can you tell us more about the smoke? Did it have a smell? Color? You maybe have a short in the electrical system or an exposed wire that arc'd out.

[2_Liter_Turbo]

Definitely post up some pictures (you can use a photo hosting website like photobucket). This will help a lot in us helping you diagnose your issues.

[Rogue One]

How to post pictures using photobucket

[blkvrtswp]

On an SR swap, Blue / Red stripe wire could be one of the main ignition system power wires. So..... it certainly could cause all sorts of issues if it has come disconnected / shorted.

Sometimes the brown O2 sensor power is also fed from this ignition wire.

If you give us more details we can probably help out. What harness is the wire in? SR coil pack harness on top of the engine plugs into the main engine harness and so do the injectors, MAFS and crank angle sensor. It also goes into the car interior and plug into the ECU under the passenger side kick panel.

SR swap in S13 has most of the modified wiring up by the battery - in S14 a lot of the modified wiring is by the ECU. But people do weird things too so pics and details will help us.

[devilsdope]

Not the best of pics. It comes down the right side of the engine and splits apart from Two other wires that are taped together. Although it doesn't look like it was supposed to go to the same place. I wasn't able to look at it last night but hopefully today will work out

[blkvrtswp]

So it is coming from the engine harness and goes over by the turbo / air filter?

Check your MAF plug / wires, CAS (distributor) plug / wires, or perhaps it is leftover from the KA wiring that used to be around the air filter box and I think it is AIV air intake valve.

You might have to unwrap the electrical tape and figure out where it leads to.

Good luck!

[devilsdope]

I really hate my phones camera, anyways it comes down out of this bundled group still havent cut that plastic coating to see the wires inside of it but I will go do that after I type this up
But yes comes down by the turbo and then just hangs, idk if that plug on it might help anyone recognize it. I will take a long around and check the wires blkvrtswp mentioned.

[devilsdope]

No left over fuses but I've removed the MAF plug and checked the wires around the distributor but it all looked good. I"ll get more fuses and slowly connect them back 1 by 1 and see if it makes a difference or not with the EGI fuse blowing or not.
Question what should I look for at my ECM to see if anything is shorted there. Like pin #? Also theres a non coated wire coming up from the back right almost at the top part of the block and just leads to the hood and that's about it. It's not coated which isn't good but I"ll tape it up tonight and maybe that can help but I haven't found any brown wires or blue/red or black/red wires that the wire could go to. But from the sounds of you saying I think it's probably one of the ign wires

[devilsdope]

ok cant get my pictures to send via email i'm done for the night but i found some stripped wire i think in my wheel well that or it might be a break cable or something I'm not sure I'll post a pic, and where the blue/red wire came out it's splits from a black and white wire that they all lead up by the firewall. Although when trying ot get the damn plastic off teh black and white wires whatever it's plugged into started leaking. I wish I could show but I gotta wait for the email to finally f*** work. Looks like oil I believe didn't look at it too close because it stopped and I"m out of time. also on one of my MAF plug by the air filter has one green oxidized looking pin on the inside. could this mean i got to replace it or is the green contact ok?
ps thanks all for the help so far:)

[devilsdope]

This is my MAF plug I believe, the little plug right before the air filter and that's the green in the middle

This is where that blue with red stripped wire comes out, but the one white and one black wire are under the plastic part leading to the plug. What is this plug and is it bad that there was an oil like thing dripping out for like 30 seconds?

This is my front left wheel well, doesn't look like wire but it looks like some sort of twisted metal though. Any ideas on what this is either?

[2_Liter_Turbo]

The loom that goes over the tire in the fender well, is it damaged in any way from the tire hitting it (from the car being lowered)? This is a common issue, and there are wires in that harness that if robbed of their insulation can cause the car to shut down. The cable in the fender well is for your hood release. It's hard to tell from your pictures, but I think the second to last one shows a pressure sensor for the power steering system. The wire that is just hanging could be for your A/C compressor. I'm just throwing out ideas from what I think I'm seeing, the pictures are pretty hard to "read", ha ha.

[blkvrtswp]

That green in your MAF plug indicates corrosion. That could be part or all of your running issues. You need to clean it out and use WD40 then some dielectric contact goop - get it from any parts store, little foil packets.

[devilsdope]

Wire harness in wheel well was finally foun . It was tucked in above the wheel well so its all good condition thank God and it is just my hood cable. Could explain why my hood pops s***. I'll try cleaning that maf sensor and give it a try.

[devilsdope]

Cleaned maf sensor. No fuses blowing. And no blinker staying on!;)
But I went to turn it off and it didn't. Removed the battery ground and it still ran. Had to pull the egi fuse so ah fml now this. Any ides why it wouldn't turn off?

[blkvrtswp]

That could be a burnt diode on your ECU. It is fixable but you would need to find a replacement diode and solder it in. Or get another ECU.

[devilsdope]

Oh lord that's what I've been worried about. Time to find my glasses because holy s*** that's some small stuff to look at.

[frapjap]

Glad the cleaning out the corrosion bit helped you out of a jam.

Also, thanks blkvrtswp for the diode and ecu suggestion!

[devilsdope]

Havent been on here in a bit, pulled my ecu but the screwa are stuck so until I get better tools its staying closed. But exactly what the dude above Me said. Thank you. I can't thank you enough now that its finally running again.

[2_Liter_Turbo]

Good to hear!

[blkvrtswp]

Nice, glad it worked out somewhat for you.

If you sniff the ECU by the opening where the LED red light is, you can many times smell a burnt trace. Especially if it is fresh!

[devilsdope]

OK got the screws of . They were glued in lol they were tough. Nothing seems burnt but kinda smells funny but yet again so does the car. Not sure if its electrical smell or not... After work I'll put it back on and fire it up and sees if it turns off

[devilsdope]

ThT and if I get enough time I'll check the ignition out.

[devilsdope]

Actually found a bad thing on my ecu. Idk the proper name for it. D119. Thanks for the idea. You guys know any websites that sell cheap OEM ones?

[devilsdope]

That's a blue line on my ecu :/