WTB: Help find a short! - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

mytagsucks · 04-19-2012, 09:19 AM

Lowdown: My 89 240sx with an sr swap has a short, and I'd like to have someone come out to my house (New Lenox,IL) to help my brother find it. He's doesn't know much in regards to finding a short (he's car retarded but learning), nor do I trust him to not fuck anything else up. I'm away at school right now, and won't be able to come home for a while so I'm looking for some help.

Previous alternator was going bad, so he replaced it. After replacement when attaching the negative terminal on the battery, there are large amounts of sparks, and the 75A alternator fuse blows. The fuse has blown at anytime the entire circuit is complete. Bother starter and alternator have been tested, both passed and are short free. And, from what I can see and in pictures the alternator seems to be hooked up correctly. Definitely a short in a ground or the wiring to/from the alternator is what I'm betting on.

I really don't want my brother attempting to fix this and fucking anything else up so I'm willing to pay $$$$ for someone to get this done for me.

lilrusty · 04-19-2012, 09:48 AM

A little hard to explain, but the positve cable that hooks up to the alternator (white i think) has to have a plastic washer in between the wire and the alternator housing. If not, the positive wire will always ground out on the housing and blow the fuse. That might be something you wanna check out, it happens to a lot of people

mytagsucks · 04-19-2012, 04:16 PM

Its there, but there's a nut over it before the positive ring is put on the bolt. Is that right nor no?

lilrusty · 04-19-2012, 06:39 PM

Yeah thats right, maybe that ring should be removed and inspected, it might have a crack in it. Another problem might be the ground wire that bolts to the alternator. It might be bolted down to the wrong hole. I believe they have 2 threaded holes but only one is for the ground....

mytagsucks · 04-21-2012, 12:17 AM

Everything is hooked up correctly.

Any takers?

04-19-2012, 09:19 AM	#1
mytagsucks Leaky Injector Join Date: Jul 2009 Location: Chicago Posts: 135 Trader Rating: (3) Feedback Score: 3 reviews	WTB: Help find a short! Lowdown: My 89 240sx with an sr swap has a short, and I'd like to have someone come out to my house (New Lenox,IL) to help my brother find it. He's doesn't know much in regards to finding a short (he's car retarded but learning), nor do I trust him to not fuck anything else up. I'm away at school right now, and won't be able to come home for a while so I'm looking for some help. Previous alternator was going bad, so he replaced it. After replacement when attaching the negative terminal on the battery, there are large amounts of sparks, and the 75A alternator fuse blows. The fuse has blown at anytime the entire circuit is complete. Bother starter and alternator have been tested, both passed and are short free. And, from what I can see and in pictures the alternator seems to be hooked up correctly. Definitely a short in a ground or the wiring to/from the alternator is what I'm betting on. I really don't want my brother attempting to fix this and fucking anything else up so I'm willing to pay $$$$ for someone to get this done for me.

04-19-2012, 09:48 AM	#2
lilrusty Zilvia Addict Join Date: Oct 2008 Location: los angeles Posts: 648 Trader Rating: (37) Feedback Score: 37 reviews	A little hard to explain, but the positve cable that hooks up to the alternator (white i think) has to have a plastic washer in between the wire and the alternator housing. If not, the positive wire will always ground out on the housing and blow the fuse. That might be something you wanna check out, it happens to a lot of people

04-19-2012, 04:16 PM	#3
mytagsucks Leaky Injector Join Date: Jul 2009 Location: Chicago Posts: 135 Trader Rating: (3) Feedback Score: 3 reviews	Its there, but there's a nut over it before the positive ring is put on the bolt. Is that right nor no?

04-19-2012, 06:39 PM	#4
lilrusty Zilvia Addict Join Date: Oct 2008 Location: los angeles Posts: 648 Trader Rating: (37) Feedback Score: 37 reviews	Yeah thats right, maybe that ring should be removed and inspected, it might have a crack in it. Another problem might be the ground wire that bolts to the alternator. It might be bolted down to the wrong hole. I believe they have 2 threaded holes but only one is for the ground....

04-21-2012, 12:17 AM	#5
mytagsucks Leaky Injector Join Date: Jul 2009 Location: Chicago Posts: 135 Trader Rating: (3) Feedback Score: 3 reviews	Everything is hooked up correctly. Any takers?