P0300, Rough Idle Out of the Blue - Anything other than spark plugs before road trip?

Originally Posted by SouthArk370Z I'd try cleaning the MAFs. It's a cheap and easy job, so, even if it is not the problem, you're not out a lot of time

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P0300, Rough Idle Out of the Blue - Anything other than spark plugs before road trip?

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01-24-2021, 03:36 PM

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JSON

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Join Date: Jul 2015

Location: Houston

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Drives: 09 AW 370Z Sport 6MT

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Quote:

Originally Posted by SouthArk370Z

I'd try cleaning the MAFs. It's a cheap and easy job, so, even if it is not the problem, you're not out a lot of time and money.

You might want to look into cleaning the TBs, also. And the injectors.

Thanks. I replaced all the plugs, cleaned TB, and the MAFs...same issue. I unplugged one of the front coil packs, and noticed the sound engine didn't run worse when that one was unplugged. I replaced it, and it seems to be running fine now. I got lucky that one of the front coils was bad and I could unplug it while the engine was running to figure out which one was bad.

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