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  1. #1

    Default Random misfire at low rpm

    Hey guys I'm new into the world of nissan and i have a 03 SER spec V. I was driving down the highway in 6th gear at about 2200 rpms the other night and randomly my service engine soon light started blinking and my engine started miss firing but after i down shifted and coasted for a little bit the problem went away. It happened to me again in 2nd gear at 1800 rpms (the guy infront of me wouldn't move) and the problem persisted for about a minute once again and then went away. My friend had a similar problem but his didn't clear on its own, it turned out to be his cat converter. I'm thinking it may be a coil pack problem. Any feedback would be appreciated.

  2. #2
    BDSF Karl
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    Default Random misfire at low rpm

    Sounds like a coilpack. Check your codes and see if the mis was cylinder specific.
    "Do you want to go fast or do you want to suck?" - Mike K.

  3. #3
    Senior Member James Kaminski
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    Default

    did it sound like a boxer engine?

  4. #4
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    Default Re: Random misfire at low rpm

    Happened to me,
    Was my coilpack.
    Check for codes to see exactly which cylinder it is and change the coil pack.

  5. #5
    Apprentice Matt
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    Default Re: Random misfire at low rpm

    B4 u go out and waste $80 on a coil pack. You gotta test a few things. Find out which cylinder is misfiring. Then unplug that coil. If the car runs the same then that's it! If it runs worse then try the other coils. If after trying this and your car still runs the same you'll know that your coils are fine. It could be your head gasket. Is your coolant look milky? If so then its your head gasket. Have you locktite your butterfly screws yet? If not check. A screw or power valve could of been eaten by your engine. Have you gutted or changed the stock header. If not it could of messed up the head. It also could be a bad MAF. Unplug it if the car runs the same then your mad is fine. Just a few things it could be.
    Last edited by triadskate; 04-11-2013 at 05:47 PM.

  6. #6
    Senior Member Marlon
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    Default Re: Random misfire at low rpm

    I have some coil packs

  7. #7

    Default

    Its a young nissan reman engine, only 28k on it so it better not be the head or ill be pissed. plugged in a trouble shooter and since the engine light isn't still on it read that everything was ok is there another way to check the codes? It did sound like a boxer engine or like a sti maybe. coolent looks fine. butterfly screws are tight. maybe it is a bad maf would that make any noise if there was a problem cuz i do hear a squealing whinning sound sometimes when i accelerate or let off the gas. I havent had any problems today so idk...how would i go about testing those coil packs other than making my engine misfire by unplugging them?

  8. #8
    Apprentice Matt
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    Default Re: Random misfire at low rpm

    That's the only way I think. But I do know its the fastest way.

  9. #9
    Senior Member Rob
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    Default

    while its idling start wiggling the coilpack wires and see if you can get the misfire to happen. they are known to get breaks/shorts usually pretty close to the coilpack connector. bend them around and have a good look. im guessing the original harnesses are sill being used so they got full mileage on them or does a remanned come with new harnesses? that would be nice.

    another problem area is the sub harness connector for the injectors (bolted to the passenger side of the intake manifold) give them wires a wiggle too. i've had both of these issues on my 03.
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