Go Back   The Supercar Registry > General Discussion > Technical & Restoration


Reply
 
Thread Tools Display Modes
  #1  
Old 03-12-2024, 02:02 PM
ALLZS ALLZS is offline
Yenko Contributing Member
 
Join Date: Dec 2007
Location: ST LOUIS MO
Posts: 1,822
Thanks: 2
Thanked 115 Times in 60 Posts
Default 1967 camaro rs battery draw

what can cause the battery to drain down overnight on a 67 rs camaro convertible there are no interior lights left on or other aux lighting
Reply With Quote
Click here to view all the pictures posted in this thread...
  #2  
Old 03-12-2024, 03:59 PM
danachevroletfor1967 danachevroletfor1967 is offline
Senior Member
 
Join Date: May 2008
Location: California
Posts: 332
Thanks: 91
Thanked 111 Times in 72 Posts
Default

Do you have an underhood light? My '67 Camaro would drain the battery when the mercury switch, or whatever controlled the light, stopped working and the light would stay on with the hood closed. The only way I discovered this much later was noticing a light pattern on the garage floor after closing the hood.
Reply With Quote
  #3  
Old 03-12-2024, 04:07 PM
Big Block Bill Big Block Bill is offline
Yenko Contributing Member
 
Join Date: May 2004
Location: Elk Grove Village Illinois
Posts: 1,507
Thanks: 2,019
Thanked 715 Times in 301 Posts
Default

Quote:
Originally Posted by ALLZS View Post
what can cause the battery to drain down overnight on a 67 rs camaro convertible there are no interior lights left on or other aux lighting
Start by removing the negative battery cable and installing a 12 volt test light between the negative post on the battery and the cable end. With everything off, and the doors closed, If the test light lights up, you have a draw in the battery. Next remove (1) fuse at a time until the light goes out to see which circuit the draw is in. If you pull all the fuses and the test light is still lit, disconnect the positive wire to the alternator. If the test light is still lit, disconnect the positive cable to the starter. If the light is still lit, you have something positive shorting to ground. Bill
Reply With Quote
The Following 5 Users Say Thank You to Big Block Bill For This Useful Post:
juliosz (03-17-2024), Kurt S (03-13-2024), L_e_e (03-12-2024), olredalert (03-14-2024), Too Many Projects (03-12-2024)
  #4  
Old 03-12-2024, 10:05 PM
Too Many Projects's Avatar
Too Many Projects Too Many Projects is offline
Yenko Contributing Member
 
Join Date: Oct 2020
Location: Town of Troy, WI
Posts: 4,268
Thanks: 2,234
Thanked 3,185 Times in 1,446 Posts
Default

Bill is right on, but if you are still running the original style, externally regulated alternator, I would start there before pulling fuses. My experience with this when these cars were still around is that a diode would short out in the alt and ground out. You can look at the dash in the dark and see if the alt light is faintly glowing too. I've seen that happen with a shorted alternator.
If the alt isn't the issue, then start pulling fuses...
__________________
Mitch
1970 Chevelle SS
1966 Chevelle SS
1967 Camaro ss/rs
1938 Business coupe, street rod
2000 FXSTS, original owner, 13k miles
Reply With Quote
  #5  
Old 03-12-2024, 10:20 PM
thehornworks thehornworks is offline
Yenko Contributing Member
 
Join Date: Mar 2006
Location: Wi
Posts: 100
Thanks: 38
Thanked 55 Times in 26 Posts
Default

Don't discount a bad battery. They are not good or long lasting now a days
Reply With Quote
  #6  
Old 03-13-2024, 07:02 PM
Kurt S Kurt S is offline
Yenko Contributing Member
 
Join Date: Aug 2000
Location: Ann Arbor, MI
Posts: 2,979
Thanks: 2
Thanked 616 Times in 303 Posts
Default

Some solid advice!
__________________
Kurt S - CRG
Reply With Quote
  #7  
Old 03-13-2024, 07:40 PM
ALLZS ALLZS is offline
Yenko Contributing Member
 
Join Date: Dec 2007
Location: ST LOUIS MO
Posts: 1,822
Thanks: 2
Thanked 115 Times in 60 Posts
Default

going to work on this over the weekend thanks for all the in put will let you know what i find
Reply With Quote
  #8  
Old 03-13-2024, 08:27 PM
169indy's Avatar
169indy 169indy is offline
Yenko Contributing Member
 
Join Date: Oct 2001
Location: Washington
Posts: 680
Thanks: 905
Thanked 544 Times in 186 Posts
Default

Don't forget disconnecting the Voltage Regulator also as part of you isolation methods.
__________________
69 Los Z11
68 SS/RS 396/325
68 Los Z28
Reply With Quote
  #9  
Old 03-16-2024, 12:39 PM
ALLZS ALLZS is offline
Yenko Contributing Member
 
Join Date: Dec 2007
Location: ST LOUIS MO
Posts: 1,822
Thanks: 2
Thanked 115 Times in 60 Posts
Default

well it looks like i found the problem the brand new voltage regulator is junk
Reply With Quote
The Following 6 Users Say Thank You to ALLZS For This Useful Post:
1967 4K (03-16-2024), danachevroletfor1967 (03-16-2024), dykstra (03-17-2024), napa68 (03-16-2024), ragtop (03-18-2024), Too Many Projects (03-17-2024)
  #10  
Old 03-17-2024, 01:18 AM
Too Many Projects's Avatar
Too Many Projects Too Many Projects is offline
Yenko Contributing Member
 
Join Date: Oct 2020
Location: Town of Troy, WI
Posts: 4,268
Thanks: 2,234
Thanked 3,185 Times in 1,446 Posts
Default

Quote:
Originally Posted by ALLZS View Post
well it looks like i found the problem the brand new voltage regulator is junk
Not the first time we have heard this about them. Glad you found the issue and can now correct it.
__________________
Mitch
1970 Chevelle SS
1966 Chevelle SS
1967 Camaro ss/rs
1938 Business coupe, street rod
2000 FXSTS, original owner, 13k miles
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not 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

Forum Jump


All times are GMT. The time now is 10:52 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.

O Garage vBulletin Plugins by Drive Thru Online, Inc.