J30 Vets what do you think?

[j30ryan]

Hey everyone,

I am new to this site, although I have read alot of comments on here, this is my first post. I have a 97 J30, 192k. Recently I left my lights on for close to 6 hrs. and the battery was obviously drained. I jumped it and left the car running to recharge the battery, which may have ended up being a bad idea.

Fast forward a week later, 3 lights, the brake light, headlamp light and battery light came on and will not go away. I charged my battery overnight and put it back in. The next day I was driving and the car's hud lights came popping up(more than the original 3) and I pulled over and shut the car off. I tried to restart the car and it wouldn't work, I managed to get my battery to autozone and had them charge it and it tested fine. I put it back in my car and drove home, which was close. All lights(the original 3) remained on after both battery charges. After reading on NICO, I suspect it is the alternator, I took a look at it and it is OEM. When my battery died the first time could I have burned out my ALT, trying to recharge the battery? Or could there be a loose connection to the ALT? Or something completely different? Also I have a squealing belt when I first start up the car, but only when it is very cold.

Any advice or help would be greatly appreciated.

[EriCCirE]

Yeah, get that alt tested

[J30tChumpCar]

The belt squeal is a bad Alt belt, it may be glazed badly enough to not pull the alt, check or replace that first then if nothing have auto zone bench check the alt.

[yodawill2000]

Also know that a bad battery can take out the Alt AND visa versa.
When my alt was going out the brake and a few other lights lit up "Dimly".

[j30ryan]

hey everyone, thank you for the info. I'll get the belt done first and let everyone know. In the event I do have to get a new Alt, I have been doing some research. I heard this Alt is compatible with the J and It is a rebuild from Nissan, will this Alt do the trick if in fact I need to replace it?

http://www.conceptzperformance.com/Cart ... .126.131.6

[JP72]

The TT 300zx and the J share the same Alt.. so yes, that will work.

[j30ryan]

Alright, so I had my mechanic test the battery and the alternator and it looks like the alternator is not sending a current back to the battery. Before I went to him, I checked(looked new) and tightened(pretty damn tight) the alternator belt. Looks like the Alt finally died, not bad for 15 years and 190k+ miles. So I will be getting the Nissan 300zx Alternator. http://www.conceptzperformance.com/Cart ... .126.131.6 Someone said the Twin Turbo is the one to choose, which year set do I need the 90-93 or 94-96?

[j30ryan]

Just a follow-up; installed the nissan 300zx twin turbo 94-96 alternator. Works great and would recommend anyone who needs to do an alternator go through the guys above. Saved a ton of money versus going through infiniti.