PO300 Code

LifeOfaZ · 03-20-2017, 01:21 PM

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, 01:05 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, 03:31 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, 03:34 PM

Glad to hear! Beats a cylinder misfire though!

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03-20-2017, 01:21 PM	#1 (permalink)
LifeOfaZ Base Member Join Date: Mar 2016 Location: Austin Posts: 14 Drives: 13 370z mdnght bl m6 Rep Power: 9	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? Sent from my iPhone using Tapatalk

03-21-2017, 01:05 PM	#2 (permalink)
ezpze Base Member Join Date: Jan 2017 Location: Mathews, VA Posts: 24 Drives: 2013 Touring Sport Z Rep Power: 8	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. Last edited by ezpze; 03-21-2017 at 01:18 PM.

03-22-2017, 03:31 PM	#3 (permalink)
LifeOfaZ Base Member Join Date: Mar 2016 Location: Austin Posts: 14 Drives: 13 370z mdnght bl m6 Rep Power: 9	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. Sent from my iPhone using Tapatalk ezpze likes this.

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03-22-2017, 03:34 PM	#4 (permalink)
ezpze Base Member Join Date: Jan 2017 Location: Mathews, VA Posts: 24 Drives: 2013 Touring Sport Z Rep Power: 8	Glad to hear! Beats a cylinder misfire though! Sent from my SM-G935P using Tapatalk