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Old 12-05-2016, 06:35 AM
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Jeep Liberty Coding Errors

2004 Jeep Liberty Sport
V6 3.7 ; 250k miles; 4X4 drive
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). ASD relay was tested and fine. She is still coding. Noid light indicated power to all wires to cylinder 4. 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 35 MPH. If I lay off the gas and re- accelerateshe will be fine for 10 - 15 seconds and start jerking again. Once she is back on level ground she stabilizes. She idols rough as well.

Any suggestions for solutions would be appreciated.

Update on coding; When we got done Sunday working on her we only has the code for P0204 Injector 1,2,3,4,5, or 6 Control. Check engine light pulses, she is still acting the same.

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