No Spark - JeepForum.com

 
LinkBack Thread Tools
post #1 of 3 Old 06-13-2013, 05:34 PM Thread Starter
Sfmonday
Registered User
1999 FSJ Cherokee 
 
Join Date: Jun 2013
Location: Grand Rapids
Posts: 11
No Spark

I just got done rebuilding my 4.0L after 230,000 miles. Broke a piston and had the entire engine honed (.010 over) milled and completely done over and ground the crank .010 under.

The problem that I am having is I've gotten it all completely back together but I don't have spark at the plugs.

I've checked the coil and it tests good. 1.4 ohm reading on the 20M setting though the two poles on the plug and 12.1 ohm reading on the 200k setting on my multimeter. I've checked all the wiring (i think) to make sure there aren't any broken wires. And I verified that all the plug connectors are in good shape.

I've got all new wires, plugs, distributor cap and rotor. I've verified timing about 4 times.

The only thing that I can think of being bad would be the hall switch in the distributor, or the crank position sensor.



Any help on this would be greatly appreciated!!

Thanks,

Sfmonday

Sfmonday is offline  
Sponsored Links
Advertisement
 
post #2 of 3 Old 06-13-2013, 07:22 PM
tjwalker
It's the crank sensor!
 
tjwalker's Avatar
1999 XJ Cherokee 
 
Join Date: Nov 2007
Location: Central Minnesota
Posts: 8,746
Garage
So crank sensor is verified connected? I'd try cleaning the crank sensor connector with electrical contact cleaner as any debris that might have gotten into that connector could inhibit the signal.

99 Cherokee, 4.0 AW4, NP242
Past Jeeps: 49 Willys, 81 Scrambler, 88 Comanche
Without "data", all you have is an opinion!
tjwalker is offline  
post #3 of 3 Old 06-13-2013, 08:27 PM
79chiefs
Registered User
1988 XJ Cherokee 
 
Join Date: Dec 2012
Location: Lillington
Posts: 994
Crank Sensor test/ or just replace it.

99WJ Laredo I6-A 2wd
88XJ-Building on a budget.
95 E34 540i-DD
79chiefs is offline  
Reply

Tags
coil testing , spark , wiring

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



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