Common Causes for Misfire DTCs - JeepForum.com
 
LinkBack Thread Tools
post #1 of 1 Old 02-06-2011, 07:58 PM Thread Starter
ZeeJay1997
Registered User
1997 ZJ 
 
Join Date: Dec 2008
Posts: 8,556
Common Causes for Misfire DTCs

Worn spark plugs
Cracked distributor caps
Out of Phase distributor/rotor
Shorted rotors
Leaking plug wires
Low fuel pressure
Low compression
Sticking valves
Broken valve springs
Worn cam lobes
Incorrect valve or ignition timing
Leaking EGR
Vacuum leaks
Leaking Injectors
Clogged Injectors
Contaminated fuel
Low fuel tank level
Excessive EVAP purge
Low ignition system primary voltage
Cracked coils
Plugged exhaust
Excessive PCV flow
Wiring Harness
Faulty PCM

Since the Misfire DTCs cause us Jeepers so much grief. Many of these are cheap and easy.

P0300 P0301 P0302 P0303 P0304 P0305 P0306 P0307 0308

ZeeJay1997 is offline  
Reply

Tags
cel , ignition circuit , mil

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



Similar Threads
Thread Thread Starter Jeep Forums Replies Last Post
Not your common offroad tire... ChargerX3 Tires & Wheels 18 12-16-2009 11:15 PM
Noob with a common question.... MTBeaconJunkie General Jeep & Off-Road Equipment 10 10-15-2009 06:01 PM
Headgasket on a 4.0? Hard? Common? Seven Engines & Drivetrain 2 07-25-2006 10:04 AM
common cb freq jason.luckwell Stereos, CB & Ham Radios, GPS, & Electrical. 1 11-23-2004 11:37 AM
why not?, common... , please Rockwall General Jeep & Off-Road Equipment 43 07-12-2002 05:22 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