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Cylinder 4 misfire; 2004 Jeep Liberty

Discussion in 'Liberty' started by Geary0342, Dec 4, 2016.

  1. Dec 4, 2016 at 10:39 AM
    #1
    Geary0342

    Geary0342 [OP] New Member

    Joined:
    Dec 4, 2016
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    Female
    First Name:
    Christine
    Vehicle:
    2004 Jeep Liberty V6 3.7
    V6 3.7 ; 250k miles
    Coded P0304 cylinder 4 misfire, P0441 EVAP Purge Flow Monitor Fault, P0204 Injector 1,2,3,4,5, or 6 Control.

    So Far I have changes all six spark plugs, switched the coils to see if it would code on a different cylinder, changed the fuel Injector for cylinder 4, completed a compression test on all 6 cylinders (all reading 150 PSI). She is still coding. Noid light indicated power to all wires. I sprayed starter fuild to see if there was a vacuum leak, but she didn't react.

    She jerks while driving and has difficulty accelerating up hills. She will jerk while trying to go up hill, but can't go above 40 MPH. If I lay off the gas and re- accelerate she will be fine for 10 - 15 seconds and start jerking again. She idols rough as well.

    Any suggestions for solutions would be much appreciated.
     
  2. Dec 5, 2016 at 6:13 AM
    #2
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine Moderator

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    Welcome! Have you checked the wiring harness?
     
  3. Dec 25, 2016 at 7:43 AM
    #3
    Charlie1585

    Charlie1585 New Member

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    I'm having the same problem but in cylinder 2 any update on these problem?
     

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