Nissan 370Z Forum - View Single Post

calendap · 06-28-2014, 12:44 PM

so this isn't really a question more of a rant on how aggravating the p0300 code is. just to give you a little back round on my car, an the events leading up the problem.

I bought it used with 25000 miles on it 1 owner its 2011 an bought the car in October drove it around for a bout a month before I put it away for the winter. over the winter I had the dreaded steering lock failure witch I got fixed still under the factory warranty. about a week or 2 after I got that fixed in April it was a cold morning an my cel popped on got the code reed an sure enough its was the dreaded p0300 after a couple days the light cleared. the light has been coming on an off since then staying on for about a week an clearing for about a day. I notice a slight misfire on cold start up every now an again but that about it the car runs fine other then that runs fine, all the way up to red line the cel doesn't flash I cant feel any misfiring

since then ive installed the stillen gen 3 intakes an the nismo cat back the cel still come on an off i really don't want to bring it to the dealer because from what ive reed on the forums they pretty much just throw parts at it till it stays off. i tried cleaning the mafs with no luck.i also reed some where on hear that the parameters for detecting a misfire are really tight so im not supper worried about it

but something else i think i noticed was that the car seems slower when the lights on maybe its just me i don't know lol. but hear is my theory i know the
p0300 kicks up the idle, but i wonder if it pulls some timing an add a little bit more fuel to lower the chance of a misfire, an there for making less power.

i was just wondering if any one els has had a similar observation or opinion

ps:i plan on getting coils an plugs done an if that doesn't work, just getting the uprev an turning off the cel with that as long as i only keep on getting the misfire at start up.

06-28-2014, 12:44 PM	#1 (permalink)
calendap Base Member Join Date: Apr 2014 Location: RI Posts: 7 Drives: 2011 370z 6mt Rep Power: 11	p0300 agrivation/rant so this isn't really a question more of a rant on how aggravating the p0300 code is. just to give you a little back round on my car, an the events leading up the problem. I bought it used with 25000 miles on it 1 owner its 2011 an bought the car in October drove it around for a bout a month before I put it away for the winter. over the winter I had the dreaded steering lock failure witch I got fixed still under the factory warranty. about a week or 2 after I got that fixed in April it was a cold morning an my cel popped on got the code reed an sure enough its was the dreaded p0300 after a couple days the light cleared. the light has been coming on an off since then staying on for about a week an clearing for about a day. I notice a slight misfire on cold start up every now an again but that about it the car runs fine other then that runs fine, all the way up to red line the cel doesn't flash I cant feel any misfiring since then ive installed the stillen gen 3 intakes an the nismo cat back the cel still come on an off i really don't want to bring it to the dealer because from what ive reed on the forums they pretty much just throw parts at it till it stays off. i tried cleaning the mafs with no luck.i also reed some where on hear that the parameters for detecting a misfire are really tight so im not supper worried about it but something else i think i noticed was that the car seems slower when the lights on maybe its just me i don't know lol. but hear is my theory i know the p0300 kicks up the idle, but i wonder if it pulls some timing an add a little bit more fuel to lower the chance of a misfire, an there for making less power. i was just wondering if any one els has had a similar observation or opinion ps:i plan on getting coils an plugs done an if that doesn't work, just getting the uprev an turning off the cel with that as long as i only keep on getting the misfire at start up. __________________ Superman: maybe I could move the earth out of the way Batman: if I had a week I couldnt list all the reasons that wouldn't work