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2002 Malibu Misfire (0P305)
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bccy
Novice
Oct 18, 2013, 3:05 PM
Post #1 of 13
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2002 Malibu Misfire (0P305)
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2002 Chevy Malibu 3.1L with almost 200k miles.
Driving the other day check engine light started flashing. At the red light idle is pretty rough. Got home and checked it with the scan tool and says it has a misfire in cylinder 5. So far I've changed all the plugs and wires, switched coil packs, switched fuel injectors and always get the same thing. What else could be the problem?
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Hammer Time
Ultimate Carjunky
/ Moderator
Oct 18, 2013, 3:20 PM
Post #2 of 13
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Re: 2002 Malibu Misfire (0P305)
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How did the color of the plug tip compare with the other cylinders (lighter or darker)
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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bccy
Novice
Oct 18, 2013, 3:26 PM
Post #3 of 13
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Re: 2002 Malibu Misfire (0P305)
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They were all really bad and corroded, it didn't look much different than the others though.
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Hammer Time
Ultimate Carjunky
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Oct 18, 2013, 3:29 PM
Post #4 of 13
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Re: 2002 Malibu Misfire (0P305)
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Well, reading the plugs is how you determine if you are dealing with an ignition problem or a fuel problem.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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bccy
Novice
Oct 18, 2013, 3:31 PM
Post #5 of 13
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Re: 2002 Malibu Misfire (0P305)
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Well, I swapped the coil packs and injectors. Wouldn't that move the misfire to another cylinder? I couldn't tell much from the plugs.
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Hammer Time
Ultimate Carjunky
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Oct 18, 2013, 3:55 PM
Post #6 of 13
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Re: 2002 Malibu Misfire (0P305)
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That eliminates a few components but you still don't know if you're dealing with a fuel problem or a spark problem and that's the first thing you need to determine.
You might be able to use a spark tester to determine that.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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bccy
Novice
Oct 18, 2013, 4:27 PM
Post #7 of 13
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Re: 2002 Malibu Misfire (0P305)
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Ok, pulled the plugs back out. Heres what they look like:
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Hammer Time
Ultimate Carjunky
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Oct 18, 2013, 4:28 PM
Post #8 of 13
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Re: 2002 Malibu Misfire (0P305)
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Which cylinder did the one on the right come out of? ....................................Also the one on the left for that matter.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
(This post was edited by Hammer Time on Oct 18, 2013, 4:29 PM)
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bccy
Novice
Oct 18, 2013, 4:38 PM
Post #9 of 13
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Re: 2002 Malibu Misfire (0P305)
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Cylinder 5 on the right, cylinder 2 on the left.
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Hammer Time
Ultimate Carjunky
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Oct 18, 2013, 4:40 PM
Post #10 of 13
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Re: 2002 Malibu Misfire (0P305)
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OK, looks like you have an ignition problem then. If you have swapped the coils around and the miss didn't move, you may have a bad ignition module, assuming the wires are good and in the correct order.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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bccy
Novice
Oct 18, 2013, 4:41 PM
Post #11 of 13
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Re: 2002 Malibu Misfire (0P305)
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All brand new wires and did swap the coils.
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Hammer Time
Ultimate Carjunky
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Oct 18, 2013, 4:52 PM
Post #12 of 13
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Re: 2002 Malibu Misfire (0P305)
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I assume you have checked compression already, right?
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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bccy
Novice
Oct 18, 2013, 4:57 PM
Post #13 of 13
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Re: 2002 Malibu Misfire (0P305)
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Yeah
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