voltage jumps. - GM Forum - Buick, Cadillac, Olds, GMC & Pontiac chat

1987-1991 Parley with regards to your 1987 to 1991 Bonneville, Olds 88 or Buick Le Sabre Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

Thread Tools Search this Thread
Old 09-22-2007, 03:47 PM   #1  
Senior Member
Posts like a Corvette
Thread Starter
Join Date: Nov 2005
Location: Hamilton, Ontario , Canada
Posts: 1,201
Thanks: 0
Thanked 0 Times in 0 Posts
jdq is on a distinguished road
Default voltage jumps.

Sometimes when at idle or a crawl if I push down on brake pedal my battery voltage will go down to about 10 amps and when I let off it goes back to normal.I also have the voltage flicker up and down with my turn signal .What would the brakes have to do with voltage.Battery is 3 months old.I know these cars are old and electrical has bugs and wear but the braking freaks me out a bit.
jdq is offline   Reply With Quote
Old 09-22-2007, 06:06 PM   #2  
Senior Member
True Car Nut
Join Date: Sep 2006
Location: Bloomington, MN
Posts: 3,693
Thanks: 0
Thanked 0 Times in 0 Posts
GoldenBullet is on a distinguished road

its most likely the brake light using the voltage my old '88 used to do that sometimes, and the same with the blinkers, its could also be the abs but i really dont know much about that..
GoldenBullet is offline   Reply With Quote
Old 09-22-2007, 06:30 PM   #3  
Junior Member
Join Date: Aug 2005
Posts: 0
Thanks: 0
Thanked 0 Times in 0 Posts
wjcollier07 is on a distinguished road

No need to worry. These cars did that when they rolled off the assembly line. Just one of those quirky things about them. The brake lights are like 6 bulbs IIRC, little bit of amperage being pulled there...and lights on with brake lights is about 16 bulbs and two halogens, so if the alt can handle your lights and brake lights and the battery light doesn't come on, your alternator is fine. You'll get a bright red light if it isn't.
wjcollier07 is offline   Reply With Quote

Related Topics
Thread Thread Starter Forum Replies Last Post
Speedometer jumps, cruise won't stay on blakeburcham Everything Electrical & Electronic 13 01-23-2010 11:01 PM
2001 Bonnie SSEI tranny jumps gears. nwgizmo 2000-2005 7 11-26-2007 10:32 PM
LOSING TRANNY FLUID AND CAR JUMPS 88bonnsse 1987-1991 4 02-07-2007 04:11 PM
***Jumps on bandwagon*** (update) ten_gigahertz Detailing & Appearance 12 06-22-2006 10:18 PM
car jumps when i push gas in 1st gear strongsun1 1992-1999 11 09-06-2005 09:49 PM

Thread Tools Search this Thread
Search this Thread:

Advanced Search

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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

All times are GMT -4. The time now is 03:18 PM.

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.