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

Battery voltage drop?!?!

Thread Tools
 
Search this Thread
 
Old Apr 13, 2009 | 10:18 PM
  #1  
3rdGenIrocZ's Avatar
Thread Starter
Member
 
Joined: Sep 2008
Posts: 227
Likes: 0
Battery voltage drop?!?!

So me and my grandpa (macanic) had to re-wire the fuel pump so it works and as doing so we wired up my outlets in my 4th gen console( 2 outlets) Before the pump was rewired i would run anywere between 12-16 amps or volts which ever the gauge reads. And now after driving it after the rewireing im at 8 on the guage. after driving for about 30 minutes i was under the red and my dash was barely visable, my head/tail lights were basically out. the radio wasnt even turned on from the massive drop. Any clue how to get power back? im recharging it but that isnt worth it cause it was charging for awhile yesterday
Reply
Old Apr 15, 2009 | 12:21 PM
  #2  
3rdGenIrocZ's Avatar
Thread Starter
Member
 
Joined: Sep 2008
Posts: 227
Likes: 0
Re: Battery voltage drop?!?!

Honestly? not even a single person can tell me. thanks
Reply
Old Apr 15, 2009 | 10:27 PM
  #3  
RockJay81's Avatar
Member
15 Year Member
iTrader: (1)
 
Joined: Jul 2008
Posts: 266
Likes: 2
From: Long Island NY
Car: 84 Z28......99 TA
Engine: Lq9 6.0... Ls1
Transmission: 4L60E X's 2
Axle/Gears: 3.73 on both
Re: Battery voltage drop?!?!

check your grounds and you may have a short. also check the alternator might be on its last leg
Reply
Old Apr 15, 2009 | 10:52 PM
  #4  
3rdGenIrocZ's Avatar
Thread Starter
Member
 
Joined: Sep 2008
Posts: 227
Likes: 0
Re: Battery voltage drop?!?!

i just got a new battery about 6 months ago and a new alternators about a year ago. before i start the engine the gauge reads 14 and then i start it and its right at 8. i dont want to drive it because it will basically die.
Reply
Old Apr 15, 2009 | 11:07 PM
  #5  
Awesome-X's Avatar
Senior Member
 
Joined: Mar 2009
Posts: 880
Likes: 1
From: Bloomfield, IN
Car: 87 Camaro
Engine: 305
Transmission: 700R4
Re: Battery voltage drop?!?!

Take the alternator to a parts store and have it tested. Parts like to go bad at really inconvenient times, like when you're working on an entirely different part of the car, so then you think its what you were working on.
Reply
Old Apr 15, 2009 | 11:10 PM
  #6  
3rdGenIrocZ's Avatar
Thread Starter
Member
 
Joined: Sep 2008
Posts: 227
Likes: 0
Re: Battery voltage drop?!?!

ok ill take it to autozone tomorrow. if nothing is wrong with it do you think it could be because we wired up 2 outlets? just to cig lighters used for charging phones if needed. so most of the time they arent being used
Reply
Old Apr 18, 2009 | 06:54 PM
  #7  
macertheracer's Avatar
Member
 
Joined: Jan 2008
Posts: 194
Likes: 0
From: close to Wichita Kansas
Car: '91 RS CP now is the son's driver
Engine: CP =3.1, will get V-8 maybe someday
Transmission: stock
Axle/Gears: 3.42 posi W/ disks
Re: Battery voltage drop?!?!

did you find your problem,, if not check your fusable links at the starter, sounds to me like you shorted something and blew a link. that is the only reason I can come up with. the alternator will not put out a charge if is does not detect a power system (ie the battery) and all of the power to the alternator starts at the battery to the starter then on into the system. try running a jumper from the battery + (positive post) to the Alternator see if that gets things on track, if so get under the car and find out which link is bad

Last edited by macertheracer; Apr 18, 2009 at 06:59 PM.
Reply
Old Apr 18, 2009 | 07:00 PM
  #8  
Awesome-X's Avatar
Senior Member
 
Joined: Mar 2009
Posts: 880
Likes: 1
From: Bloomfield, IN
Car: 87 Camaro
Engine: 305
Transmission: 700R4
Re: Battery voltage drop?!?!

Yeah actually fuse links are a good suggestion, I had a taurus I thought the alternator was out on so I changed it but it turned out it was the link that sits on the side of the fuse box.
Reply
Old Apr 18, 2009 | 11:33 PM
  #9  
3rdGenIrocZ's Avatar
Thread Starter
Member
 
Joined: Sep 2008
Posts: 227
Likes: 0
Re: Battery voltage drop?!?!

any1 got a pic for this link? i got my alternator checked and it was running great
Reply
Old Apr 18, 2009 | 11:44 PM
  #10  
macertheracer's Avatar
Member
 
Joined: Jan 2008
Posts: 194
Likes: 0
From: close to Wichita Kansas
Car: '91 RS CP now is the son's driver
Engine: CP =3.1, will get V-8 maybe someday
Transmission: stock
Axle/Gears: 3.42 posi W/ disks
Re: Battery voltage drop?!?!

no i don't, but you can find it easy enough. get to your starter there is some 10 guage wires, 2 or 3 "connected along with the battery cable" give each of them a little tug if one or more seem to stretch and spring back you have found your problem
Reply
Old Apr 18, 2009 | 11:53 PM
  #11  
3rdGenIrocZ's Avatar
Thread Starter
Member
 
Joined: Sep 2008
Posts: 227
Likes: 0
Re: Battery voltage drop?!?!

ok and would an MSD hekp alot of i instal one?
Reply
Old Apr 20, 2009 | 09:08 PM
  #12  
ClickClickVroom's Avatar
Member
 
Joined: Jan 2009
Posts: 134
Likes: 0
From: St. Aug
Car: 92 Z03 RS TBI
Engine: 5.0 L03
Transmission: T-5
Re: Battery voltage drop?!?!

It has nothing to do with your currrent situation. Check the little power distributor (not sure of technical name) by the battery. If you're facing the car it's to the right of the battery. Make sure that nut is really tight.
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
GeneralIesrussi
Carburetors
6
Jun 20, 2024 07:21 PM
MM2Robinson
Electronics
39
Oct 1, 2017 09:16 AM
Johnoooooo
Tech / General Engine
7
Sep 22, 2015 08:55 AM
eustodp
Electronics
8
Sep 20, 2015 05:09 PM
Formula_88AE
Engine Swap
1
Sep 3, 2015 01:47 PM




All times are GMT -5. The time now is 04:22 AM.