Alt Trouble, wiring problem?, back from the dead, can anyone help? Options

[jcbass7]

here is something you can try. test your voltage right at the battery with the car off. you should get 12v. now test it again, this time touch the 2 battery terminals, you should still get 12v. now go to the front of the car, and test the voltage again. you can use the alt power line for the positive and touch the multimeteres negative to each one of the ground bolts you hooked your cables to. if you get less then 12v... then you know there is a bad ground or issue with the battery relocation.

Will do, first thing tomorrow, thanks Art

when you put the new plug on.... did you compare the little pinout diagram sticker on the 5s alt to the 3s one? i remember that when i soldered my 5s plug on, the pinout locations were not in the same place as the 3s plug had and i had to change the order of the wires around.

I spliced wires together and didn't touch the pinss... the 3s harness had a white, yellow and a grey with red stripe
the 5s had a white a yellow and a blue with red stripe

so i did this

yellow-yellow
grey/red-blue/red
white-white

[Batman722]

ok Jesse, here it is.

I tested my ST and these are the results.

I started it up and

battery -> 15v
big wire on alternator ->15v

I unplugged the 3 wire plug and measured the volts at the 3 wires... each had 12v-13v comming from them. There's your problem.

If you read every post i've made I've said the same thing over and over, either the main wire or the 3 wire plug. First thing tomorrow is to check the main wire you soldered to make sure it's making a good enough connection to your alternator. I don't think it is. Check the voltage before and after the splice/solder for consistancy.

[jcbass7]

It is making fine contact ive done it over a couple times.. and that itself wouldn't explain all the other problems... would it?

It gets perfect continuity when i check that main wire before and after the splice and even when i check it further back in the harness.


I agree that its the three wire plug, i have thought that all along, what i have been trying to find is WHY isn't that third one getting what its supposed to and until now i didn't even know what it was supposed to be getting

This post has been edited by jcbass7: Mar 4, 2007 - 9:04 AM

[jcbass7]

ok so on my GT i checked the three wires for continuity to ground

one was 0.00
blue/red was 0.00
and the other was 20ish ohms

then i checked my black gt 3s

one was infinity
blue/red was 0.00
and the thir was 20ish.

[Batman722]

what about volts on the GT ?

start the GT, unplug the 3 wire plug, check the voltage.

[jcbass7]

what about volts on the GT ?

start the GT, unplug the 3 wire plug, check the voltage.

When i get a chance...... its only 95 miles away..

[jcbass7]

ok so here is where i stand!

Let me outline the problem as clearly as possible and we will start this again and begin the work now that im home!


The alternator is not charging the battery enough and eventually the battery just dies.
The alt is good and the battery is good
So i checked the three wires going into the alt on the plug. when running they are supposed to all put out 12-13 volts.

the problem is...
one of the three wires is not putting out any voltage at all.

the white and yellow wires are putting out 12 and the grey with red stripe is not putting out any.
on the 5s the grey/red is a blue wire with a red stripe.
my car is has a 3s in it.


any ideas? ive traced the wire as far back as i can without removing engine parts..

i guess what i need to know is... where does the grey/red wire go to?? so i can check for voltage further down the line?



PS: mods feel free to move this thread.. it really isn't the right section anymore now that its mainly 3s/wiring issues

This post has been edited by jcbass7: May 28, 2007 - 2:06 PM

[jcbass7]

ok, so via wiring diagram the alt wire that is dead goes all the way into the ignition.

I tested the wire at the ignition and it is putting out 12 volts. which means... the wire is broken or messed up between there and the alternator.



This post has been edited by jcbass7: May 28, 2007 - 2:24 PM

[jcbass7]

HAHA I'M PATHETIC!

so yea... it was the 10amp fuse "gauge"

hence the reason my windows wouldn't work and my guage cluster... etc....

all i can say is wow...

lol you all have my permission to laugh at me anytime you feel the need!

i guess in the end im glad it was that simple. haha

[Culpable04]

congrats,

all problems are simple once they are resolve. you accomplished this, meaning you're learning a lot from your car; Now sit down and remember where you started and where you are now with your car.