Random No Start - JKowners.com : Jeep Wrangler JK Forum
 
LinkBack Thread Tools Display Modes
post #1 of 3 Old 03-08-2017, 08:25 AM Thread Starter
Wheeler
 
dhnate823's Avatar
 
Join Date: May 2013
Location: anaheim, CA
Age: 30
Posts: 13
Feedback: 0 reviews
Random No Start

Not sure if this should go here or not but ive been stumped lately with a random no start. Ive replaced the starter, the camshaft position sensor, the battery is good and ive checked as many grounds as i can find. It sounds as if something seizes up after turning the key and will go between that seizing noise and cranking for a bit then start finally. Im lost here.....its an '07 X 6spd. 2.5 RK X Factor 35's regeared to 4.88. Ive also installed a Spod with an Arb twin compressor under hood. Any info or help would go a long way. Thanks guys!
dhnate823 is offline  
Sponsored Links
Advertisement
 
post #2 of 3 Old 03-08-2017, 02:54 PM
JKowners Vendor
 
MoTech's Avatar
 
Join Date: Apr 2011
Posts: 1,251
Feedback: 2 reviews

Seizing...hmm. Do a voltage drop across the positive and negative cables going to the block and starter. Could be your engine is drawing more current than the cables can provide; or, the cables have broken done and are not flowing enough amps. While cranking you don't want to see more than 1.5 volt drop across either cable. I recently had one that was a slow crank and the cable had eroded inside the insulation so it was difficult to detect.

If you have access to a high amp meter you should have about 200-250 amps while cranking. 400 + amps could indicate a mechanical engine problem.

MoTech
725-502-8507

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.
MoTech is offline  
post #3 of 3 Old 03-08-2017, 06:21 PM Thread Starter
Wheeler
 
dhnate823's Avatar
 
Join Date: May 2013
Location: anaheim, CA
Age: 30
Posts: 13
Feedback: 0 reviews

I didnt even think to check if its dropping voltage while starting. I'll check that next. Any idea if a bad starter switch could cause the weird sound? The no start is almost always accompanied by that mechanical noise.
dhnate823 is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the JKowners.com : Jeep Wrangler JK 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:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



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 On
Pingbacks are On
Refbacks are On

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