test a coil?? - JeepForum.com

 
LinkBack Thread Tools
post #1 of 9 Old 05-03-2011, 07:22 PM Thread Starter
Djsthe1
Registered User
1991 YJ Wrangler 
 
Join Date: Apr 2009
Location: Waldorf Maryland
Posts: 912
test a coil??

Is there a way to test a coil to see if it is bad? What voltage should you get from the coil?

Djsthe1 is offline  
Sponsored Links
Advertisement
 
post #2 of 9 Old 05-03-2011, 07:31 PM
OOXTEME
Registered User
1994 YJ Wrangler 
 
Join Date: Feb 2010
Location: Gilbert
Posts: 160
Here ya go!
http://youtu.be/rJYJ3KvPhhY

Or...
http://youtu.be/eKWsI2vNxPs

Quote:
Originally Posted by ZeroGravity View Post
People really drive with the top down and the A/C on??
94 Yj 350 700R4 Swap with Ford 8.8 in progress, 3" BDS Lift, 1" Shackels, 3" Body, Rhino Lined Tub
OOXTEME is offline  
post #3 of 9 Old 05-03-2011, 08:52 PM Thread Starter
Djsthe1
Registered User
1991 YJ Wrangler 
 
Join Date: Apr 2009
Location: Waldorf Maryland
Posts: 912
OK so the first test would be the same as turning the key on and removing the wire from the top of the distributor cap and putting it near a ground, which I did with coil and a spare coil and nothing. The second I am guessing that by testing the Ohms, if it is a bad coil it will not read any Ohms?
Djsthe1 is offline  
post #4 of 9 Old 05-04-2011, 06:41 AM Thread Starter
Djsthe1
Registered User
1991 YJ Wrangler 
 
Join Date: Apr 2009
Location: Waldorf Maryland
Posts: 912
Bump...
Djsthe1 is offline  
post #5 of 9 Old 05-04-2011, 06:51 AM
Louie4
Jeep Enjuneering
 
Louie4's Avatar
1993 YJ Wrangler 
 
Join Date: Aug 2008
Location: Raleigh
Posts: 10,823
Your Haynes or Chilton's manual should have the acceptable readings to see if it's bad or not. If you don't know you can take it to Autozone and they'll test it for free, probably even try to sell you a new one if its bad.

Lou

I have a jeep...and it is modified...I win.

YJOTM July 2012
YJOTM February 2014


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Louie4 is offline  
post #6 of 9 Old 05-04-2011, 07:05 AM Thread Starter
Djsthe1
Registered User
1991 YJ Wrangler 
 
Join Date: Apr 2009
Location: Waldorf Maryland
Posts: 912
Ahh.. good old trusty Haynes manual.. I forgot all about that..
Djsthe1 is offline  
post #7 of 9 Old 05-04-2011, 01:09 PM Thread Starter
Djsthe1
Registered User
1991 YJ Wrangler 
 
Join Date: Apr 2009
Location: Waldorf Maryland
Posts: 912
OK so the Ohm level on the coil is 1.5 but still no spark. Took the CPS off, all looks well, cleaned it off and reinstalled. Still nothing, is there a way to check the CPS to see if it is bad?
Djsthe1 is offline  
post #8 of 9 Old 05-04-2011, 02:06 PM
Louie4
Jeep Enjuneering
 
Louie4's Avatar
1993 YJ Wrangler 
 
Join Date: Aug 2008
Location: Raleigh
Posts: 10,823
Quote:
Originally Posted by Djsthe1 View Post
OK so the Ohm level on the coil is 1.5 but still no spark. Took the CPS off, all looks well, cleaned it off and reinstalled. Still nothing, is there a way to check the CPS to see if it is bad?
I think there is a continuity test you can perform but I'm not sure. Have any buddies with the same motor as your jeep? You could try swapping it out.

So there's no spark from the coil to the distributor? If not I'd look towards the CPS like you said.

Lou

I have a jeep...and it is modified...I win.

YJOTM July 2012
YJOTM February 2014


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Louie4 is offline  
post #9 of 9 Old 05-04-2011, 02:21 PM Thread Starter
Djsthe1
Registered User
1991 YJ Wrangler 
 
Join Date: Apr 2009
Location: Waldorf Maryland
Posts: 912
No buddies with this motor, I have a spare 95 but the connectors are different on the the newer ones. I looked through the Haynes manual and found a test for the CPS, not sure I understand it but will try it.
Djsthe1 is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the JeepForum.com 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 e-mail address for yourself.



Email Address:
OR

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.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Similar Threads
Thread Thread Starter Jeep Forums Replies Last Post
How to test the coil? nhlx38 YJ Wrangler Technical Forum 4 08-09-2010 03:27 PM
4.2 coil test grimjeeperyj14 YJ Wrangler Technical Forum 1 09-26-2009 12:09 PM
Coil test incredibull TJ Wrangler Technical Forum 1 04-29-2009 08:47 PM
How do I test a ign coil wire 91-2.5l dynamic098 YJ Wrangler Technical Forum 6 03-03-2009 07:33 PM
Test a coil? drmaxdc YJ Wrangler Technical Forum 1 08-09-2004 01:29 AM

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 On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome