04 pacifica misfiring p301,p302

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04-01-2010, 07:45 PM

epac

Junior Member

Thread Starter

Join Date: Dec 2009

Posts: 3

04 pacifica misfiring p301,p302

2004 pacifica continiously misfiring diagnostic shows cylinder 2 misfiring I replaced the spark plugs didnt work replaced the coil didnt work and finally replaced injector but still cylinder 2 misfiring anybody please tell me what else to try diagnostic shows 301 and 302 and I beleive cylinder 2 is the middle one from the front row under the intake

Thanks

04-01-2010, 10:54 PM

Virglijus

Junior Member

Join Date: Jul 2009

Location: Lithuania

Posts: 28

All possible causes:

INTERMITTENT MISFIRE
VISUAL AND PHYSICAL INSPECTION
IGNITION WIRE
ASD RELAY OUPUT CIRCUIT (COIL)
ENGINE MECHANICAL PROBLEM
IGNITION COIL
COIL CONTROL CIRCUIT
SPARK PLUG
CHECKING FUEL PRESSURE
FUEL PUMP INLET STRAINER PLUGGED
RESTRICTED FUEL SUPPLY LINE
FUEL PUMP MODULE
CHECKING FUEL LEAK DOWN
FUEL INJECTOR OPERATION
ASD RELAY OUTPUT CIRCUIT (INJECTOR)
FUEL INJECTOR
INJECTOR CONTROL CIRCUIT

PCM (IGNITION SYSTEM)