Nissan 370Z Forum - PO300 Code

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LifeOfaZ

03-20-2017 12:21 PM

PO300 Code

So recently I installed Berk resonated test pipes and it sounds great but the car is idling erratically.
It idles at 1000-1100 rpm when warm and every so often it drops to ~800 rpm then goes back up.
The code it's throwing is PO300. Any suggestions on where to start ? The car run fine once I get up to speed but it seems slower than normal.
What should I do?

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ezpze

03-21-2017 12:05 PM

Multipule Cylinder Misfire code. Make sure all your ignition coil boots are seated correctly and all connectors are connected. Make sure you check all vacuum hoses and for exhaust leaks. Air/fuel ratio may be way off. Maybe due for spark plugs.

LifeOfaZ

03-22-2017 02:31 PM

Thanks for your reply, there was an exhaust leak that was fixed and now car is running better, still feels a little sluggish and revs drop every now and then but runs better.

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ezpze

03-22-2017 02:34 PM

Glad to hear! Beats a cylinder misfire though!

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