IPB

Welcome Guest ( Log In | Register )

 Forum Rules 
Unbalanced EngineeringUMI PerformanceBlaine Fabrication.comSolo PerformanceHotpart.com
 
Reply to this topicStart new topic
> Battery or alternator is dead...
Steve91T
post Aug 31 2017, 12:36 AM
Post #1


Experienced Member
***

Group: Advanced Members
Posts: 2,038
Joined: 3-March 10
From: Huntersville, NC
Member No.: 9,105



Off, it was showing 12.5 volts. Running was 13.4 at the cables, 13.1 from the unused posts on top. The gauge inside usually shows less than 13.

It doesn't have a hard time starting but the battery will show about 50%. Autozone couldn't even do a test because the battery was so low.

I'm thinking battery.
Go to the top of the page
 
+Quote Post
CrashTestDummy
post Aug 31 2017, 02:48 AM
Post #2


Veteran Member
*****

Group: Advanced Members
Posts: 3,792
Joined: 3-July 04
From: Pearland, Texas
Member No.: 385



They should be able to do a quick charge then load test. If not, go somewhere else. But yeah, prob battery.
Go to the top of the page
 
+Quote Post
Steve91T
post Aug 31 2017, 03:26 AM
Post #3


Experienced Member
***

Group: Advanced Members
Posts: 2,038
Joined: 3-March 10
From: Huntersville, NC
Member No.: 9,105



Would a bad battery show less than 13 volts on the stock gauge?
Go to the top of the page
 
+Quote Post
mr.beachcomber
post Aug 31 2017, 01:33 PM
Post #4


Advanced Member
**

Group: Advanced Members
Posts: 280
Joined: 4-August 12
From: Roswell, GA
Member No.: 142,803



Stock battery (no load, no charging) should show 12.6V (six individual cells each at 2.1V). If the voltmeter shows ~13.6V-14.1V while the car is running, what you're seeing is the alternator charge. If the battery is quickly dissipating it charge at rest (12.5V down to 10.2V), the plates are heavily sulfated and it's time for a new battery like CrachTestDummy stated.
Go to the top of the page
 
+Quote Post
Steve91T
post Aug 31 2017, 02:51 PM
Post #5


Experienced Member
***

Group: Advanced Members
Posts: 2,038
Joined: 3-March 10
From: Huntersville, NC
Member No.: 9,105



QUOTE (mr.beachcomber @ Aug 31 2017, 09:33 AM) *
Stock battery (no load, no charging) should show 12.6V (six individual cells each at 2.1V). If the voltmeter shows ~13.6V-14.1V while the car is running, what you're seeing is the alternator charge. If the battery is quickly dissipating it charge at rest (12.5V down to 10.2V), the plates are heavily sulfated and it's time for a new battery like CrachTestDummy stated.



Ok maybe I was overthinking it. I was just expecting more volts while the car was running.

I'll get a new battery.
Go to the top of the page
 
+Quote Post

Reply to this topicStart new topic
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:

 



Lo-Fi Version Time is now: 29th March 2024 - 05:47 AM