Code PO300 Random Misfire - Maxima Forums

Go Back   Maxima Forums > Maxima Discussions > 4th Generation Maxima (1995-1999)
Search


4th Generation Maxima (1995-1999) Visit the 4th Generation forum to ask specific questions or find out more about the 4th Generation Maxima.

Code PO300 Random Misfire

Reply
 
 
 
Thread Tools Search this Thread
Old 09-05-2011, 10:30 AM   #1
Member
iTrader: ( 1 )
 
Join Date: Sep 2008
Location: Dallas Tx
Posts: 107
Code PO300 Random Misfire

Ok so i get a PO300 random misfire, on my moms 99 max i have checked coil packs all work great, injectors all spray, and has new plugs in it... ANY CLUES ON WHAT ELSE IT COULD BE? also it has a new MAF in it.. Any help would be appreciated.. Thanks in advance
BIG D MAXX is offline   Reply With Quote
Old 09-05-2011, 11:31 AM   #2
Senior Member
iTrader: ( 2 )
 
Join Date: Aug 2010
Location: Vero beach Florida
Posts: 379
Brokedowncavalier@yahoo.com
t could be the knock sensor, it controls your timing, im not 100% sure it could cause a misfire but its possible, when the plugs were put in were they gapped properly?
__________________
TOPLESS FTW!!!!
beatdown97 is offline   Reply With Quote
Old 09-05-2011, 11:48 AM   #3
Member
iTrader: ( 6 )
 
Join Date: Jan 2009
Location: NY
Posts: 219
Send a message via AIM to joesae01max
Might have an intake leak some where - maybe the intake manifold.
joesae01max is offline   Reply With Quote
Old 09-05-2011, 11:53 AM   #4
Senior Member
iTrader: ( 1 )
 
Join Date: Jun 2009
Location: Reedsport, OR
Posts: 3,918
KS wont cause misfire, only loss of power and low MPG. Why was the MAF replaced and did the misfire start after or before MAF swap? How did you check the coils? Working at idle doesn't mean they will work under load, cylinder pressure increases resistance at the plug gap.
asand1 is offline   Reply With Quote
Old 09-05-2011, 12:14 PM   #5
Senior Member
iTrader: ( 2 )
 
Join Date: Aug 2010
Location: Vero beach Florida
Posts: 379
Brokedowncavalier@yahoo.com
before i changed out my ks i had a misfire under load, as soon as i changed it the stuttering and misfire went away
__________________
TOPLESS FTW!!!!
beatdown97 is offline   Reply With Quote
Old 09-05-2011, 12:22 PM   #6
Member
iTrader: ( 1 )
 
Join Date: Sep 2008
Location: Dallas Tx
Posts: 107
KS was replaced when i did the VCG and Intake gaskets,,, MAF was swaped because it didnt work anymore would let the car go above 1500 rpm at idle, the misfire was there before the swap of the MAF and the new plugs i put in it. I checked coils by unpluggin them but not underload,

Now the wierd thing is that it doesnt do it all the time, and when it does it you can barely feel it but its there
BIG D MAXX is offline   Reply With Quote
 
 
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
SES light with 4 codes maxinout93 5th Generation Maxima (2000-2003) 14 10-31-2015 02:04 AM
Need a consult before replacing fuel injector again... jmlee44 4th Generation Maxima (1995-1999) 7 10-04-2015 08:18 PM
Pulling Codes P1278 and P1279 Kyle Lee Cleveland 6th Generation Maxima (2004-2008) 1 09-28-2015 09:01 PM
2000 Maxima P1336 code zmcneely13 4th Generation Maxima (1995-1999) 1 09-26-2015 02:26 PM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are Off



All times are GMT -7. The time now is 05:17 AM.


Maxima.org Forums Home Here you can view your subscribed threads, work with private messages and edit your profile and preferences Frequently Asked Questions on the Forums Search Find other members Registration is free! Support Maxima.org! Receive perks and benefits by donating to Maxima.org Questions? Comments?  Suggestions? Contact Us! Visit our Sponsors View and submit Maxima events Log Out of Maxima.org