Headlights kill engine - 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 12-23-2013, 08:11 PM   #1
Jeeper
 
tomjeep's Avatar
 
Join Date: Jan 2012
Posts: 158
Headlights kill engine

Ok well i know its not my yj but my 76 cherokee with a 360 amc is finally running for the first time in two months. But it has to be jumped with the other car revved way up just to start it. Even then, itll usually turn over really slow and wont start but occasionally itll fire right up. Then, if I try to turn on the headlights once its running, itll kill it immediately and wont keep running even if its revved up and i shut off the lights immediately. Can anyone please help me out with this weird issue?

__________________
'92 Jeep Wrangler, 4.0, 5 speed, CB radio, 1" BL, 31" tires
'76 Jeep Cherokee Chief, 360 V8, Quadratrac
tomjeep is offline   Quote Quick Reply
Old 12-23-2013, 08:18 PM   #2
Jeeper
 
Gutless 93's Avatar
 
Join Date: Nov 2013
Posts: 46
I would start by testing your alternator and battery

__________________
93 Wrangler - Off-Roader 4.0 Auto, 3 inch susp. lift, 1 Shackle, 33 tires, AA SYE and Tom Woods Driveshaft(in the box), more soon
84 Camaro - Project/Drag car
91 Legacy - Beater
Gutless 93 is offline   Quote Quick Reply
Old 12-23-2013, 08:21 PM   #3
Jeeper
 
tomjeep's Avatar
 
Join Date: Jan 2012
Posts: 158
Alright, thanks. Could it be this if this happened all at once?
__________________
'92 Jeep Wrangler, 4.0, 5 speed, CB radio, 1" BL, 31" tires
'76 Jeep Cherokee Chief, 360 V8, Quadratrac
tomjeep is offline   Quote Quick Reply
Old 12-23-2013, 08:25 PM   #4
jokerchief462

WF Supporting Member
 
jokerchief462's Avatar
 
Join Date: Apr 2012
Location: North Las Vegas
Posts: 9,146
Yeah its a power issue with the battery or alternator. If the battery is dead trickle charge it so you don't burn up the alternator.
__________________
89 2.5 TBI, 4" RC lift, 1" Booms, SYE, Adams Driveshafts front and rear, Ford 8.8 with 4:88s, BFG 33X12.50X15, and a ton of other stuff.

AF Jeep Club Tail Number 184
jokerchief462 is offline   Quote Quick Reply
Old 12-23-2013, 08:53 PM   #5
Jeeper
 
Join Date: Aug 2011
Location: north of St.Franisville La.
Posts: 1,688
Send a message via Yahoo to Nubby55
Quote:
Originally Posted by Gutless 93 View Post
I would start by testing your alternator and battery
And clean all the connection on the Batt., starter, Alt., and grounds.
Nubby55 is offline   Quote Quick Reply
Old 12-23-2013, 09:07 PM   #6
Jeeper
 
tomjeep's Avatar
 
Join Date: Jan 2012
Posts: 158
Alright everyone, thanks. I was a little nervous it was like a short somewhere or something a little worse than that. Oh by the way my brother said it would have taken days just to get a response on his mustang forum to one of his questions. Thanks to all for your help this is a great website.
__________________
'92 Jeep Wrangler, 4.0, 5 speed, CB radio, 1" BL, 31" tires
'76 Jeep Cherokee Chief, 360 V8, Quadratrac
tomjeep is offline   Quote Quick Reply
Old 12-23-2013, 09:16 PM   #7
Jeeper
 
bc3_Jeep's Avatar
 
Join Date: Nov 2010
Location: NE corner of Iowa
Posts: 1,551
BEFORE you buy a new battery...... clean EVERY single connection down to BRIGHT SHINY METAL.......from your battery all the way down to starter. I have seen this issue 100s of times cause just your problem.

Get it running and with a VOLTMETER (or multimeter set on DC Volts) check across your battery the voltmeter should reads 12.5 volts OR higher (not TOO high....15Volts maxish)..... if it does..... battery issue (if cleaned contacts).... if it does not...... possible loose/shiny/glazed belt.... possible bad alternator.
__________________
"For Gawd's sake, put a RELAY in there or you could burn the whole damn Jeep to the ground" ...this quote brought to you by people who do not understand the law.....Kirchoff's, Ohm's, or Faraday's.
Violation of KISS shall always ring false in TRUE engineering. - ME___
Had 75CJ5, 89YJ, 93YJ. Have 82CJ7 & 95YJ____Not one burnt yet due to lack of relays.
bc3_Jeep is offline   Quote Quick Reply
Old 12-23-2013, 10:09 PM   #8
Jeeper
 
Join Date: Aug 2011
Location: north of St.Franisville La.
Posts: 1,688
Send a message via Yahoo to Nubby55
Some where 12.5 to low 14s is good much higher and you could burn out the Batt. as said before, Clean, Clean is your friend.
Nubby55 is offline   Quote Quick Reply
Old 12-24-2013, 07:59 PM   #9
Jeeper
 
tomjeep's Avatar
 
Join Date: Jan 2012
Posts: 158
Thanks everyone, I cleaned and tightened all my connections and now it fires right up and the alternator is making a good current. Thanks again for all the help.

__________________
'92 Jeep Wrangler, 4.0, 5 speed, CB radio, 1" BL, 31" tires
'76 Jeep Cherokee Chief, 360 V8, Quadratrac
tomjeep 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:
If you do not want to register, fill this field only and the name will be used as user name for your post.
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




» Network Links
»Jeep Parts
» Featured Product

All times are GMT -5. The time now is 07:02 PM.



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