Battery Light Came On - Pontiac GTO Forum
User Tag List

 
LinkBack Thread Tools Display Modes
post #1 of 6 (permalink) Old 08-26-2013, 08:00 AM Thread Starter
 
Join Date: Jun 2013
Location: Miles TX
Posts: 156
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Battery Light Came On

I finally got my 67 GTO running again after my new rally gauge installation and everything was working great until my drive to work this morning. About 10 minutes into the drive my battery light came on at idle. I had the headlights on but no other power accessories. I turned off the headlights since the sun was about to come up. Off idle the light went out and then came on again at the next stop lights. At the last stop there was actually a buzzing sound when the light came on. I assume this is the voltage regulator (which is a new unit from Perf Years)

I think I'll drive it to Autozone over lunch and have them test things but I wanted to get some opinions on here first.
WhittP is offline  
Sponsored Links
Advertisement
 
post #2 of 6 (permalink) Old 08-26-2013, 11:53 AM
Administrator
 
05GTO's Avatar
 
Join Date: Oct 2004
Location: Deliverance, GA
Posts: 5,132
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 10 Post(s)
It is not uncommon to have a bad (out of the box) voltage regulator, I had the same problem when I restored the 66. The first 2 were bad and the 3rd worked.

If the alternator checks out at autozone I would replace the VR.

Randy


05GTO is offline  
post #3 of 6 (permalink) Old 08-26-2013, 01:23 PM Thread Starter
 
Join Date: Jun 2013
Location: Miles TX
Posts: 156
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Well the car wouldn't start at lunch time and I somehow forgot my cables. I pulled the battery out and a buddy gave my a ride to Autozone and had the battery checked. They had to charge it a bit to get a reading but it came back good. So now it's either the alternator or the voltage regulator. What's the best way to test this? I have a multimeter and a battery charger with an alternator test built in.
WhittP is offline  
 
post #4 of 6 (permalink) Old 08-26-2013, 02:54 PM
Former Super Moderator
 
Rukee's Avatar
 
Join Date: Feb 2007
Location: South Central Wisconsin
Posts: 9,919
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 21 Post(s)
Check that you have battery voltage at the big red wire at the back of the alt. You should have 14.2-14.6v running at the battery. If not remove the alt and have it tested, if it passes then more then likely your VR is bad, even though it's new.
Rukee is offline  
post #5 of 6 (permalink) Old 08-26-2013, 02:58 PM
 
jmt455's Avatar
 
Join Date: Mar 2012
Location: SE Michigan
Posts: 725
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I had trouble getting a good voltage regulator for my 68.
They seem to be very easily fried!

Took 3 tries before I got a good one. I ended up with one of the solid state type. I was warned that they are not as durable as the old contact type regulators, but mine has been performing well for over a year.

1968 Pontiac GTO
1983 Pontiac Bonneville (G) wagon
2008 Pontiac G8 base
jmt455 is offline  
post #6 of 6 (permalink) Old 08-28-2013, 07:41 AM Thread Starter
 
Join Date: Jun 2013
Location: Miles TX
Posts: 156
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I ended up putting a new voltage regulator and a new alternator on it before i could get a 14.4v reading at the battery. Everything seems good now and thanks for the advise.
WhittP is offline  
Sponsored Links
Advertisement
 
Reply

  Pontiac GTO Forum > The 1964-1974 Pontiac Tempest, Lemans & GTO > 1964-1974 Tempest, Lemans & GTO General Discussion

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Pontiac GTO Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in











Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Similar Threads
Thread Thread Starter Forum Replies Last Post
1967 Battery Light purerum 1964-1974 Tempest, LeMans & GTO Technical and Electrical Wiring 5 03-04-2013 06:01 PM
Question about battery (idiot) light rwhitaker 1964-1974 Tempest, Lemans & GTO General Discussion 5 06-11-2012 01:25 PM
When your battery was dead, did your battery light stay on? SueY816 2004-2006 GTO General Discussion 7 05-31-2010 05:54 PM
Battery Light teamwoody72 1964-1974 Tempest, Lemans & GTO General Discussion 2 07-26-2009 10:33 PM
Idiot light on after dead battery. vette68 Service, Maintenance and Technical Discussion 4 08-12-2006 07:08 PM

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome