Voltage regulator??? - Jeep Wrangler Forum
Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > YJ Jeep Wrangler Forum > YJ Tech Forum

Join Wrangler Forum Today


Reply
 
Thread Tools

Please support our sponsors and let them know you heard about them on WranglerForum.com
Old 08-16-2014, 10:28 PM   #1
Jeeper
 
RawhideClab's Avatar
 
Join Date: Nov 2013
Location: Floresville, TX
Posts: 154
Voltage regulator???

Ok replaced my alternator bout a month ago. After that the voltmeter started jumping from 14 to pegged out then back. Thought no big deal I just need to clean that tape the gauges connect to. However...driving it home the other night I noticed my head lights were flickering with the needle, getting brighter when the needle would peg out. I have checked my connections on the alternator. Jiggled all the wires with it running and it wouldn't do it again.

So my question is does the '89 have a voltage regulator besides the one on the alternator?

__________________
1989 Base 2.5Low Output,
5SPD trans, 2" Body lift, 235/75R15 AT's
Fondly named by my wife: Latisha (in the spirit of the Dolly Parton's song "Jolene")
Do what you can where you are with what you have. ~ Theodore Roosevelt
RawhideClab is offline   Quote Quick Reply
Old 08-17-2014, 11:17 AM   #2
Jeeper
 
RawhideClab's Avatar
 
Join Date: Nov 2013
Location: Floresville, TX
Posts: 154
Link to a video of what it's doing. Towards then end of the vid you can see when the needle pegs out the gauge light gets brighter so do the head lights. Any thoughts?

http://youtu.be/Kert9rmpNr8

__________________
1989 Base 2.5Low Output,
5SPD trans, 2" Body lift, 235/75R15 AT's
Fondly named by my wife: Latisha (in the spirit of the Dolly Parton's song "Jolene")
Do what you can where you are with what you have. ~ Theodore Roosevelt
RawhideClab is offline   Quote Quick Reply
Old 08-17-2014, 02:25 PM   #3
Jeeper
 
andyldavis's Avatar
 
Join Date: May 2014
Location: Apopka, FL
Posts: 72
Halloween?

That's cool. Like it is haunted. I think I would jump on the grounds at the motor, alternator, frame etc first.
__________________


You know you have a real jeep . . . .
You fix almost everything yourself
.
andyldavis is offline   Quote Quick Reply
Old 08-18-2014, 09:06 AM   #4
Jeeper
 
RawhideClab's Avatar
 
Join Date: Nov 2013
Location: Floresville, TX
Posts: 154
I'll double check my grounds but I really don't think that is it. The only thing that I changed was the alternator and it didn't do this before that. It seems to me like something is telling the alternator to produce as much as it can for a couple of seconds then it's back to normal.
__________________
1989 Base 2.5Low Output,
5SPD trans, 2" Body lift, 235/75R15 AT's
Fondly named by my wife: Latisha (in the spirit of the Dolly Parton's song "Jolene")
Do what you can where you are with what you have. ~ Theodore Roosevelt
RawhideClab is offline   Quote Quick Reply
Old 08-18-2014, 09:28 AM   #5
Jeeper
 
0III0forlife's Avatar
 
Join Date: Mar 2012
Location: Ridgway, Pa.
Posts: 3,571
Images: 6
I would get a multi meter and check the voltage coming into the battery when those spikes are present. If the voltage regulator is actually kicking out and letting it "run wild" for those couple of seconds then its a faulty regulator.

If the regulator sticks open and produces too much power, the battery could explode.
__________________
'87 YJ, 4.2L built and bored, 8.5" of lift, 8.8 rear, AX15/NP 231, Tom Woods drive shafts, Flat fenders, 12,000LB winch, Custom bumpers, Rattle can paint job. Never completed...
0III0forlife is offline   Quote Quick Reply
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Jeep Wrangler Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools

Posting Rules
You may post new threads
You may 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




Download our Mobile App

» Featured Product

All times are GMT -5. The time now is 12:46 AM.



Jeep®, Wrangler, Liberty, Wagoneer, Cherokee, and Grand Cherokee are copyrighted and trademarked to Chrysler Motors LLC.
Wranglerforum.com is not in any way associated with the Chrysler Motors LLC