Battery Gauge not working properly - Ranger-Forums - The Ultimate Ford Ranger Resource

General Ford Ranger Discussion General discussion of the Ford Ranger that does not fit in any other sub-forum.

LinkBack Thread Tools Search this Thread
Old 05-15-2014
Thread Starter
Join Date: May 2014
Location: rhode island
Posts: 2
Battery Gauge not working properly

im getting a low reading on battery gauge tried changing battery same thing truck is running fine as far as i can tell just the gauge telling me my battery is dead any advice?
Reply With Quote
Old 05-15-2014
RF Veteran
iTrader: (1)
Join Date: Jan 2014
Location: Vancouver, BC
Posts: 7,599
You will need to get/borrow a voltage meter.

Set meter for 20vDC (20 volts Direct Current)

Engine and Key OFF
Connect Black probe to Negative battery terminal
Connect Red probe to Positive battery terminal

You should get 12.4v to 12.8v

Start engine
At the battery you should now read 14.1v-14.8v

If not turn off key.

Find the alternator, on the back of the alternator will be a large connector with 1 or 2 larger wires connected to one terminal, this is called the "B+" terminal.
Put black meter probe on alternators case, put red probe on this terminal.
You should get 12.4-12.8v(battery voltage)

If not then you have blown fuses in the Power Box, they will be 50 or 60amp fuses, one for each wire on that terminal.

If you have 12.4-12.8v at the B+ terminal then alternators voltage regulator is probably bad
Reply With Quote
Old 05-15-2014
Thread Starter
Join Date: May 2014
Location: rhode island
Posts: 2
It was the altenator thank you for your reply
Reply With Quote

Related Topics
Thread Thread Starter Forum Replies Last Post
Brakes not working properly Dynodad Suspension Tech 1 10-20-2010 05:26 PM
Replaced Gauge Cluster, new tach not working properly Vince near Seattle Interior Semi-Tech 1 10-31-2009 09:53 PM
power windows not working properly.... Chattanoogan General Technical & Electrical 3 10-31-2009 09:50 PM
iTrader function not working properly, or am I just a noob? Fx4wannabe01 Ranger-Forums Office 12 06-05-2009 01:58 PM
AC not working properly Vulcan Power General Technical & Electrical 4 07-09-2008 01:30 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 -6. The time now is 02:20 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 and affiliated sites.