Yet another CKP Thread -
LinkBack Thread Tools
post #1 of 4 Old 09-27-2009, 03:16 PM Thread Starter
Registered User
Join Date: Nov 2006
Location: Texas
Posts: 4
Yet another CKP Thread

I'm working on a customer's 2004 Grand Cherokee 4.0. No spark. The Jeep has sat for two weeks, and it didn't take long for the packrats to move in. There was a big rat nest right on top of the engine. So I figured it was a chewed wire, but which one? I looked for a long time and saw some chewed wires, but nothing that was cut all the way through. After returning home I looked online here and elsewhere and read dozens of threads about the crankshaft position sensor, and figured that was likely the problem. I went back to take another look (unfortunately I'm working at the customer's house, not in my shop) and check out the CKP. I work on lots of cars and trucks and must say that this is about the damnedest thing I've ever seen. It's like the engineers purposely put the sensor in the most inaccessible place they could come up with! Anyway, I was feeling around up in there to find the pigtail wire, and finally found it--all 1/4 inch of it. The rats had chewed it off right at the sensor. I still haven't found the rest of the pigtail and connectors. So this is my question: Where should the other end of the pigtail be? In other words, where is the corresponding connector in the main harness where the CKP plugs in? For all I know the rats could have made off with the whole thing. Next trip I'll take all my trick mirrors, wobble extensions, air ratchets, etc. and will be better prepared. It would just be nice to know what I'm looking for. Thanks.

Last edited by grw800; 09-27-2009 at 03:35 PM.
grw800 is offline  
Sponsored Links
post #2 of 4 Old 09-27-2009, 03:32 PM
Registered User
1999 WJ 
Join Date: Jun 2008
Location: Crystal Lake, IL
Posts: 3,331
From what I recall, the plastic connector is way towards the back of the block, on the passenger side.
gatorayde is offline  
post #3 of 4 Old 09-27-2009, 08:12 PM Thread Starter
Registered User
Join Date: Nov 2006
Location: Texas
Posts: 4
Thanks, gatorayde. Should the pigtail & connectors be readily visible from the top? Anyone have a pic?
grw800 is offline  
post #4 of 4 Old 10-01-2009, 07:15 PM Thread Starter
Registered User
Join Date: Nov 2006
Location: Texas
Posts: 4
Just thought I would post up my experience with this PITA job. The bolt that holds the CKP is an 11m hex head. You'll want a minimum of 24" of 1/4" extensions with at least one being a wobble extension. Even nicer is a 1/4" air ratchet. There's just about zero room up in there to swing a ratchet. I ended up unbolting the crossmember and lowering the transmission/engine about 2-3 inches. This made it WAY easier and isn't near as bad as it sounds. A floor jack and two jack stands is all you need, then just remove eight easy bolts and lower the crossmember a little.
grw800 is offline  

Quick Reply

Register Now

In order to be able to post messages on the forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid e-mail address for yourself.

Email Address:


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
First thread and really need some help please crgeltn ZJ Grand Cherokee Forum 19 12-10-2009 01:16 PM
thread gone ? retroron ZJ Grand Cherokee Forum 4 04-07-2009 08:46 PM
Another IRO LA Thread.... nierace ZJ Grand Cherokee Forum 50 05-20-2007 09:54 PM
Not just another DW thread.. rustycherokee18 ZJ Grand Cherokee Forum 7 11-25-2006 07:08 PM
VS. thread i have 5 jeeps ZJ Grand Cherokee Forum 14 04-11-2005 07:55 PM

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