99 Voyager-failed acceleration

DSM1319

MEMBER
1999 PLYMOUTH VOYAGER
4 CYL
FWD
AUTOMATIC
96,000 MILES

Vehicle is 99 voyager, 2.4 engine, 2 [front] wheel drive, 96,000 miles-just started to balk/misfire/backfire when accelerating. Advance auto read the codes when I got a light- codePO302-CYLINDER 2 MISFIRE. I replaced the single unit coil pack and all wires then drove it again. Still got light. Returned to advance auto where they cleared the codes. Still doing the same thing without the dash light?

Wednesday, May 25th, 2011 AT 2:29 AM

1 Reply

RASMATAZ

MECHANIC
75,992 POSTS

Misfire on cyl #2 -check spark, compression and injector for this cylinder. Contributing factors:

Oxygen sensor.
Catalytic converter.
Fuel injectors dirty/sticking.
Mass airflow sensor/Airflow meter.
Throttle position sensor.
Crankshaft position sensor
Knock sensor
Manifold absolute pressure sensor.
EGR Valve
Fuel pressure regulator leaking or defective fuel pump.
Fuel contamination.
Foul/defective spark plugs.
Open spark plug wires.
Ignition coil/Coil packs defective.
Incorrect ignition timing.
Cap and rotor.

Note:If it doesn't apply disregard it and keep testing.

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Wednesday, May 25th, 2011 AT 4:39 AM