Go Back   Chevrolet Forum - Chevy Enthusiasts Forums > Past Chevy Truck, SUV & Vans > S-10 & Blazer
Sign in using an external account
Register Forgot Password?
Search

S-10 & Blazer 1982-2005
The S-10 and Blazer was arguably the most versatile and accessorizable mid-size truck and SUV on the market.
Platform: S/T-series & GMT 330

Welcome to Chevrolet forum!
Welcome to Chevrolet forum,

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, at no cost, you will have access to start new topics, reply to conversations, privately message other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, join Chevrolet forum today!


Reply
 
 
 
 
LinkBack Thread Tools
  #1  
Old 09-21-2009, 05:31 PM
CF Beginner
 
Join Date: Sep 2009
Location: SW Pennsylvania
Posts: 3
Default 91 s-10 blazer battery keeps going dead

on my 91 blazer how can I find the source of a short? when my blazer sits for more than one day the battery is completly dead. I assumed the battery was shot because it was 7 years old but I put in a new battery and after sitting for the weekend it is dead. Once I charge it and try to put the negative terminal back onto the battery post it archs really bad as though something is drawing power or turned on. I am pretty knowledgeable with vehicles but this one has me stumped. need to find the problem asap. Every day driver, Thanks
Register today for free or log-in if already registered to remove this ad!
Reply With Quote
  #2  
Old 09-21-2009, 09:03 PM
MDTAHOE's Avatar
Super Moderator
Professional Mechanic
 
Join Date: Nov 2008
Location: Bowie, MD
Posts: 2,955
Default

You need a DVOM ( digital volt ohm meter) set on amps. Disconnect the negative battery cable, attach 1 meter lead to the cable and one to the battery. You need to have less than 25ma or as close as possible. Start pulling fuses until the amperage drops. Then find out what is on the circuit and staying on. Usually it is a under the hood light,glove box light on the lights on the vanity mirror (visor mirror).
__________________
ASE Master Tech, L1 Advance Engine Performance certified
__________________________________________________ ___________________________
I will not answer repair questions by PM, if you would like my input you can PM me and ask me to reply to your public thread.
Reply With Quote
  #3  
Old 09-22-2009, 11:10 AM
CF Beginner
 
Join Date: Sep 2009
Location: SW Pennsylvania
Posts: 3
Default

when I set my DVOM to amps and connect my black meter lead to the ground wire (disconnected)and my red lead to the positive on the battery my ma is 00.00. When I connect my black meter lead to the ground cable and the red lead to the negative post on the battery it reads 18.75 then starts to drop and the wires on the DVOM get very hot quick. Am I testing it the right way? I can work on demo derby cars but this electrical thing is confusing to me.

Last edited by kashin18; 09-22-2009 at 02:33 PM.
Reply With Quote
  #4  
Old 09-22-2009, 10:02 PM
MDTAHOE's Avatar
Super Moderator
Professional Mechanic
 
Join Date: Nov 2008
Location: Bowie, MD
Posts: 2,955
Default

Does it say 18.75 ma or 18.75 a ?
__________________
ASE Master Tech, L1 Advance Engine Performance certified
__________________________________________________ ___________________________
I will not answer repair questions by PM, if you would like my input you can PM me and ask me to reply to your public thread.
Reply With Quote
  #5  
Old 09-23-2009, 03:29 AM
tm4hammer's Avatar
CF Active Member
 
Join Date: Jun 2009
Location: Colorado
Posts: 159
Default always good stuff boss

That was some good advise MD ! He can further isolate at the connectors next to the firewall seprating front from back! if need be or he can look and find a squirlle nest above his fuel tank and chewed up harnesss like me a couple weeks ago on the burb ! ha ha dont ask ! i have no idea ! but i do have the cure a 50 to 100 yard cure damn tree rats anyway they also make a tool called the powershot it is one of the best in quick tracing shorts or electrcal problems can both check g or energise a circuit and i believe the more expensive model has a DVOM installed in it , a must have quick check tool along with a good DVOM for todays mess of electrical systems which is about all it seems has been coming my way lately sorry to butt in boss !i just feel his pain
__________________
TM4HAMMER
96 SUBURBAN 2500 LS 7.4 LITER
BIGBLACKBURB!!
Reply With Quote
  #6  
Old 09-23-2009, 02:05 PM
CF Beginner
 
Join Date: Sep 2009
Location: SW Pennsylvania
Posts: 3
Default

it dosent say ma om just 18.75. I found that the power locks and rear defrost are on the same circuit and neither is working. I removed the larger 30a metal fuse that controls that and my ground is not arcking when connect it back to the battery. 2 days and battery not going dead so I think it is in the locks or rear defrost. Thank guys.
Reply With Quote
  #7  
Old 10-01-2009, 01:16 AM
CF Beginner
 
Join Date: Sep 2009
Posts: 4
Default

This exact same thing happened on my 97 blazer. Would sit for a day and be completely dead like something was draining the battery over night. Well turns out I took it to 5 different mechanics and they all told me ECU every single time. That might be it.
Reply With Quote
Old 10-01-2009, 01:16 AM
 
 
 
Reply

Tags
2500, battery, blazer, chevy, day, dead, drain, electrical, forum, k5, problems, s10, short, sits, venture


Thread Tools

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 On
Trackbacks are On
Pingbacks are On
Refbacks are On


Advertising

Featured Sponsors
Vendor Directory
Our Sponsors
All times are GMT -5. The time now is 07:59 AM.

Internet Brands, Inc.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
SEO by vBSEO ©2010, Crawlability, Inc.

Emails Backup