misfire on cylinder 8 - JeepForum.com
Search  
Sign Up   Today's Posts
User: Pass: Remember?
Advertise Here
Jeep Home Jeep Forum Jeep Classifieds Jeep Registry JeepSpace Jeep Reviews Jeep Gallery Jeep Clubs Jeep Groups Jeep Videos Jeep Events Jeep Articles
Go Back JeepForum.com > Models > Jeep Grand Cherokee & Commander Forums > WJ Grand Cherokee Forum > misfire on cylinder 8

Poison Spyder DeFenders™ - "Tubeless" Jeep FendeAll Bilstein shocks & struts - Lowest Prices Ever and Santa Kolak Announces: Kolak Exhaust 20% Off Sale!

Reply
Unread 08-14-2013, 03:58 PM   #1
david4127
Registered User
 
Join Date: Oct 2011
Posts: 294
misfire on cylinder 8

I have a 99 gc with the 4.7 keeps getting misfire code I've replaced the coil and plugs any ideas

david4127 is offline   Reply With Quote Quick reply to this message
Unread 08-14-2013, 04:24 PM   #2
1999wjlimited
Registered User
1999 WJ 
 
Join Date: Aug 2012
Location: Lenoir, North Carolina
Posts: 614
Mine did the same thing. I ended up having to change the fuel injector and its been fine for the past year now.
__________________
1999 WJ Limited 4.7 4x4 - 15x8 pro comp soft 8's - 2.5" bb- 31x10.50x15 General grabber at2
1999wjlimited is offline   Reply With Quote Quick reply to this message
Unread 08-14-2013, 08:57 PM   #3
BobbyDash
Registered User
2004 WJ 
 
Join Date: Feb 2009
Location: Grand Rapids MI
Posts: 13
I just went through this with cylinder 1. Swap the injector with another cylinder. Make sure you don't **** up the rubber seals. If you're lucky you won't be paying $8k to have the stealership put a long block in like I am.
BobbyDash is offline   Reply With Quote Quick reply to this message
Unread 08-14-2013, 09:23 PM   #4
rep-tile
Registered User
2004 WJ 
 
Join Date: Jul 2013
Location: bakersfield, ca
Posts: 442
Test the injector with a ohmmeter. If reading is 12 ohm (+/-), injector is good. Report back.
rep-tile is offline   Reply With Quote Quick reply to this message
Unread 08-15-2013, 02:43 AM   #5
kentman
Registered User
2006 XK Commander 
 
Join Date: Jan 2004
Location: Wilmington, NC
Posts: 1,433
Been there, done that. Mine on the WJ started in #4. After I put a new injector in #4, then #8 started. I took the fuel rail off again and did #8 and #2 for good measure while I was in there. That was five years ago. I have not had a misfire since then.
__________________
'06 XK Limited, 5.7L, QD II, Black, 128K
'02 WJ Overland, 4.7L HO, QD, Inferno Red, 104K
kentman is offline   Reply With Quote Quick reply to this message
Unread 08-21-2013, 12:51 AM   #6
david4127
Registered User
 
Join Date: Oct 2011
Posts: 294
Ok thanks I'll try swapping injectors and cleaning fuel rail I did notice the spark plug gets pretty gunked up kinda looks like oil had it checked out they said to change o2 sensors but I don't think that's it
david4127 is offline   Reply With Quote Quick reply to this message
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.
Note: All free e-mails have been banned due to mis-use. (Yahoo, Gmail, Hotmail, etc.)
Don't have a non-free e-mail address? Click here for a solution: Manual Account Creation
Email Address:

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.


Thread Tools






Jeep, Wrangler, Cherokee, Grand Cherokee, and other models are copyrighted and trademarked to Jeep/Chrysler Corporation. JeepForum.com is not in any way associated with Jeep or the Chrysler Corp.