Electronics Need help wiring something up? Thinking of adding an electrical component to your car? Need help troubleshooting that wiring glitch?

Alternator not charging

Thread Tools
 
Search this Thread
 
Old 10-10-2012, 07:40 PM
  #1  
Junior Member
Thread Starter
 
ray1989's Avatar
 
Join Date: May 2011
Location: Maryland
Posts: 40
Likes: 0
Received 0 Likes on 0 Posts
Engine: 350 40 over
Transmission: T5
Alternator not charging

To my knowledge for an alternator to charge all you need is the ground the batt wire and the one that goes to the starter, and the volt meter.
so i have all of them hooked up right and it still wont charge. i just got a new one today because it tested bad and now the brand new one doesnt charge either. i cant figure this one out but i do see a semi burnt relay that says P.E.D.5 on the side and idk what that is for. by i am carb'ed.

any help in verifying my knowledge or if you know of any reasons why it wont charge besides it just being a bad alt.
Thanks
Old 10-10-2012, 08:45 PM
  #2  
Supreme Member

 
ringo234's Avatar
 
Join Date: Feb 2004
Location: So Cal
Posts: 1,581
Likes: 0
Received 2 Likes on 2 Posts
Car: 89 IROC Z28
Engine: 357 TPI
Transmission: 700R4
Axle/Gears: 3.42 Posi
Re: Alternator not charging

When mine went out a few years ago I reconnected exactly the was the old was and it just worked. What does your voltmeter read?
Old 10-10-2012, 08:50 PM
  #3  
Senior Member

 
blackbmagic's Avatar
 
Join Date: Mar 2010
Location: LI, NY
Posts: 864
Likes: 0
Received 2 Likes on 2 Posts
Car: 1985 IROC-Z
Engine: 355
Transmission: T5
Axle/Gears: 3.42 10 Bolt Posi
Re: Alternator not charging

No it depends if its regulated internally or not.

A true one wire alternator will only need to be connected to the batt + to charge.
Old 10-10-2012, 10:02 PM
  #4  
Supreme Member

 
ringo234's Avatar
 
Join Date: Feb 2004
Location: So Cal
Posts: 1,581
Likes: 0
Received 2 Likes on 2 Posts
Car: 89 IROC Z28
Engine: 357 TPI
Transmission: 700R4
Axle/Gears: 3.42 Posi
Re: Alternator not charging

Since Alternators make AC I thought they had the rectifiers to convert them to DC and solid state voltage regulators built in.
Old 10-11-2012, 09:02 AM
  #5  
Junior Member
Thread Starter
 
ray1989's Avatar
 
Join Date: May 2011
Location: Maryland
Posts: 40
Likes: 0
Received 0 Likes on 0 Posts
Engine: 350 40 over
Transmission: T5
Re: Alternator not charging

I was told there might be a fuseable link in the line to the starter so im gonna start there. its not putting out anything that i can see because the battery died as i was driving home with the good alternator all hooked up
Old 10-11-2012, 09:36 AM
  #6  
Supreme Member

 
afremont's Avatar
 
Join Date: Feb 2008
Posts: 1,004
Received 1 Like on 1 Post
Car: 90 IROC
Engine: 5.7 TPI
Transmission: 4L60
Axle/Gears: 3.23
Re: Alternator not charging

Originally Posted by ringo234
Since Alternators make AC I thought they had the rectifiers to convert them to DC and solid state voltage regulators built in.
The rectifier diodes will be in there, but the regulator can be external but that would be highly unlikely to find on a third gen or probably any camaro for that matter. Sometime around '67 external regulators went away.
Old 10-11-2012, 09:39 AM
  #7  
Supreme Member

 
afremont's Avatar
 
Join Date: Feb 2008
Posts: 1,004
Received 1 Like on 1 Post
Car: 90 IROC
Engine: 5.7 TPI
Transmission: 4L60
Axle/Gears: 3.23
Re: Alternator not charging

For a common internally regulated (not a 1-wire) alternator, you have to have the light bulb path to ground and you have to supply a switched 12V to one of the alternator plug terminals. The 12V has to be switched or it will drain the battery when the engine isn't running.
Old 10-12-2012, 01:24 PM
  #8  
Junior Member
Thread Starter
 
ray1989's Avatar
 
Join Date: May 2011
Location: Maryland
Posts: 40
Likes: 0
Received 0 Likes on 0 Posts
Engine: 350 40 over
Transmission: T5
Re: Alternator not charging

After all this work it was a fuse in the fuse box.......i cant believe it
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
apie2546
Electronics
3
10-16-2016 02:24 PM
SRKLEGIN
Interior
6
10-03-2015 10:11 PM
mcfastestZ28
Tech / General Engine
1
10-01-2015 11:23 AM
RS Reaper
Electronics
2
09-27-2015 07:04 PM
raymondandretti
Electronics
1
09-27-2015 06:43 PM



Quick Reply: Alternator not charging



All times are GMT -5. The time now is 07:54 PM.