cranks and sputters. - JeepForum.com

 
LinkBack Thread Tools
post #1 of 9 Old 10-21-2013, 04:59 AM Thread Starter
Bishie336
Registered User
1999 WJ 
 
Join Date: Oct 2013
Location: Sowa Town
Posts: 2
Wj cranks and sputters.

Hi,My 4.0 l6 sputters when i attempt to start and cuts off instantly.It started with Intermittent Crank sensor and injector 1 fault codes.It then died completely. I changed the injectors with upgraded 4 hole type and CPK.It jst didnt work.Now the fault codes cant disply coz I had removed the battery terminals.
I realy dnt knw what to do.Can someone assist

Bishie336 is offline  
Sponsored Links
Advertisement
 
post #2 of 9 Old 10-21-2013, 05:22 AM
Duh
Registered User
 
Join Date: Apr 2002
Posts: 491
Check fuel pressure. Sputtering often means low fuel into cylinders.
Duh is offline  
post #3 of 9 Old 10-21-2013, 01:22 PM
new2site
Registered User
2002 WJ 
 
Join Date: Jan 2012
Location: Orange county
Posts: 1,058
Your battery's voltage is quite possibly low...it should test at 12.6 resting voltage (not running). These WJ PCM's demand top rate voltage...if it's even on a low side they'll do what yours is doing --engine will crank...but when started will just sputter out. If you have access to another battery from other vehicle with close cranking amp rating give it a shot...don't shut hood while testing this as WJ's have very little clearance between battery and hood (in case test battery is on "tall side")

Post back follow up results..
new2site is offline  
post #4 of 9 Old 10-21-2013, 01:29 PM
cykaaro
Registered User
2000 WJ 
 
Join Date: Apr 2012
Location: orangville
Posts: 2,841
While in there worth cleaning the battery connectors, ground from battery on the engine side, and engine to firewall. This will just know you're getting a good connection and isn't part of the problem.

The beatings will continue until attitudes improve!

HID Quad bi-xenon + foglight retrofit
http://www.hidplanet.com/forums/showthread.php?44572-Jeep-2000-Grand-Cherokee-WJ
cykaaro is offline  
post #5 of 9 Old 10-22-2013, 12:15 PM
new2site
Registered User
2002 WJ 
 
Join Date: Jan 2012
Location: Orange county
Posts: 1,058
Update?
new2site is offline  
post #6 of 9 Old 10-30-2013, 12:57 AM Thread Starter
Bishie336
Registered User
1999 WJ 
 
Join Date: Oct 2013
Location: Sowa Town
Posts: 2
Thanks for your tip guys.I will try them out.I noticed one more thing though.The NGK spark plugs (#ZFR5N) currently fitted have a gap of 0.90 as opposed to the recommended Champion spark plugs (#RC12ECC- copper plus) which has a gap of 0.36.Could this be contributing to the problem?
Bishie336 is offline  
post #7 of 9 Old 10-30-2013, 08:34 AM
ChrisHager
Smite
 
ChrisHager's Avatar
2004 WJ 
 
Join Date: Jan 2011
Location: Springfield
Posts: 8,455
Garage
Woah! Definitely re-gap them!

~Chris
His: 2004 WJ - OME HD 'Kolak' Lift - Build Thread
His: 1979 J-10 - 3" on 33s - Build Thread
His: 2009 Expedition
His: 1978 F250 Custom - Build Thread
Hers: 2000 TJ
Hers: 2010 Jetta

ChrisHager's 'Grilled' Thread

Quote:
Originally Posted by Matt
"You can't recycle tartar sauce."
ChrisHager is offline  
post #8 of 9 Old 10-30-2013, 01:02 PM
rdkendrick
Registered User
2003 WJ 
 
Join Date: Jan 2013
Location: Cincinnati
Posts: 3,140
CLEANING AND GAPPING (Except HO engines)

The plugs may be cleaned using commercially available spark plug cleaning equipment. After cleaning, file center electrode flat with a small point file or jewelers file before adjusting gap. The Gap specification is 0.035 for the 4.0L engine, and 0.040 for the 4.7L engine.

CAUTION: Never use a motorized wire wheel brush to clean spark plugs. Metallic deposits will remain on spark plug insulator and will cause plug misfire.

Sent from my iPad using my fingers
rdkendrick is offline  
post #9 of 9 Old 10-30-2013, 02:27 PM
Jeepforthewin
Registered User
2010 JK Wrangler 
 
Join Date: Jan 2013
Location: Jacksonville
Posts: 2,134
Quote:
Originally Posted by ChrisHager View Post
Woah! Definitely re-gap them!
X2!! Gap plays a pretty big role!

2010 JKU - Stock for now
2005 WK - 6" lift, 35" BFG's, a lot more (SOLD)
Jeepforthewin 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



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