No Spark replace everything! - 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 12-24-2010, 02:55 PM   #1
Jeeper
 
Macman's Avatar
 
Join Date: Oct 2009
Location: Lower Alabama
Posts: 32
Images: 1
No Spark replace everything!

I have a 1987 "Wrangler yj with a 2.5L 4 cylinder. I get no spark at all. I have replaced the ECU, coil, distributor, rotor. I have 12 volts coming into the coil at the yellow wire, 12 volts across the yellow and black. I am at a total loss. For a coil to work the 12 volt power must be disrupted. But on this model there is no lead coming from the distributor.

Macman is offline   Quote Quick Reply
Old 12-24-2010, 03:12 PM   #2
Sponsoring Vendor
 
Ibuildembig's Avatar
 
Join Date: Aug 2010
Location: Fruitland, Missouri
Posts: 8,424
Try the crank position sensor

Ibuildembig is offline   Quote Quick Reply
Old 12-24-2010, 03:19 PM   #3
Drives by Braille

WF Supporting Member
 
AzTJ's Avatar
 
Join Date: Dec 2006
Location: For-8-Oh!
Posts: 13,621
You sure the rotor is spinning?
AzTJ is offline   Quote Quick Reply
Old 12-24-2010, 04:00 PM   #4
Jeeper
 
Macman's Avatar
 
Join Date: Oct 2009
Location: Lower Alabama
Posts: 32
Images: 1
Where is the crank position sensor? And how does it connect to the coil?
Macman is offline   Quote Quick Reply
Old 12-24-2010, 04:05 PM   #5
Jeeper
 
Join Date: Mar 2010
Location: Bastrop LA
Posts: 26
It is on the bell housing top drivers side this went out on mine bout 3 months ago and its where I would put my money...
fireman_033 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


Similar Threads
Thread Thread Starter Forum Replies Last Post
Which spark plugs? RacinSimmy YJ General Discussion Forum 1 10-02-2010 07:26 PM
URGENT!!! Spark plugs Kodysteeler43 TJ Tech Forum 4 07-15-2010 03:25 PM
91 yj 4.0, no spark need help TJMiller YJ Tech Forum 3 05-12-2010 07:08 PM
no spark after head gasket change on 91 wrangler. Smitty91 YJ Tech Forum 2 02-03-2009 01:04 AM
bump *clunk* ??? bmanrkg3 TJ General Discussion Forum 18 08-24-2006 12:27 AM



Download our Mobile App

» Featured Product

All times are GMT -5. The time now is 02:09 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