Question about 2004 Jeep Wrangler
P0301 - Cylinder 1 misfire detected........P0302 - Cylinder 2 misfire deteced, and so on........so either it is a current misfire, which you would be running on 4 cylinders instead of 3, or it is an intermittent problem.......i will provide some possiblities,,,
- ignition system (spark plugs, leads, coil packs)
- fuel system (injectors, ecu etc)
- running out of fuel
- low compression
Basically, if your vehciel has not had service for a while, change the spark plugs, and engine oil, and give her some loving, tender care....
However, if it is regularly servicedm there might be a bigger problem.....
More info required to help you.
PLease vote if you liked this response
Posted on Aug 23, 2010
a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of.(from cars to computers, handyman, and even drones)
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
Code P0301 is a generic OBD Code for Misfire. It also indicates you have a misfire in the #1 Cylinder. I would start by checking the plug wire to make sure its clean and on all the way (at the coil as well). Then if that doesnt help I would pull the plug out and check the condition of the spark plug. hopefully this will give you some direction. Thanks for Using FixYa!
Posted on Dec 03, 2008
P0301 is #1 cylinder misfire detected and is most likely related to a worn spark plug that is need of replacement. All plugs should be replaced if replacing one. Not sure how many miles you have on this vehicle, or if plugs were ever installed, but this is the basic step to take in diagnosis.
Posted on Jun 02, 2010
Tips for a great answer:
Nov 06, 2010 | 2004 Jeep Wrangler
Aug 17, 2010 | 2004 Jeep Wrangler
Jun 02, 2010 | Jeep Grand Cherokee Cars & Trucks
Jun 01, 2009 | 1998 Jeep Wrangler
Apr 10, 2009 | 2004 Jeep Wrangler
Dec 03, 2008 | 2004 Jeep Wrangler
Mar 06, 2014 | 2004 Jeep Wrangler
1,115 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: