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P0300 And High Idle w/Uprev

Originally Posted by Natrix Any updates? I'm having the same issue (stock ECU/tune, though). http://www.the370z.com/engine-drivet...0300-saga.html EDIT: You're the 4th person with a 40th Anniversary (including myself) who has reported this

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Old 01-05-2023, 02:52 PM   #1 (permalink)
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Originally Posted by Natrix View Post
Any updates? I'm having the same issue (stock ECU/tune, though).

The P0300 Saga

EDIT: You're the 4th person with a 40th Anniversary (including myself) who has reported this issue. Did you have your car since new, or do you know if the previous owner had the same problem?
No update, currently trying to identify two plastic pieces that cracked so can have them replaced. I’ve had mine since around 6,000 miles and it was stock then from the dealership.

Not sure why the pics uploaded sideways lol but hopefully someone can identify those parts
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File Type: jpg 29894DAE-3D62-4E41-8EEE-16C40BBEFCA2.jpg (282.7 KB, 4 views)
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Old 01-06-2023, 01:37 AM   #2 (permalink)
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Ok. Just wondering if you had been having the P0300 issue since you purchased the car.

Those plastic parts are listed in the FSM as part of the intake air ducts (see attached snapshot). If yours are cracked, I am guessing there is a vacuum leak, which could explain the misfire.
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