P0300 Random/Multiple Cylinder Misfire - Nissan Forums : Nissan Forum
 
» Auto Insurance
» Featured Product
» Wheel & Tire Center


NissanClub.com is the premier Nissan Forum on the internet. Registered Users do not see the above ads.
Reply
 
LinkBack Thread Tools Display Modes
  #1 (permalink)  
Old 04-27-2007, 01:48 AM
Registered User
 
Join Date: Jan 2004
Posts: 16
Thanks: 0
Thanked 0 Times in 0 Posts
iTrader: 0 reviews
P0300 Random/Multiple Cylinder Misfire

Are there any other common problems that would cause this besides the coils? (2002 2.5l)
I changed the spark plugs first and then started swapping the coils with the new one I bought. It didn't seem do get any better or worse when they were switched.
I installed a spec-v header about three weeks ago. Car ran great. Over the past week it's gradually started to chug a little at low rpm's and idle a bit rough. It's gotten progressively worse to the point now where it's pretty much missing all the time except over 4,500 rpms and then it gets better. Light also started flashing intermittently.
Are there any other tests I can run to see if there’s anything else wrong?
I just don't want to keep buying coils @ $100.00 a piece and that’s not even the problem.

I also have two other codes that I think wouldn't cause this condition:
P1564 Which I think is the cruise control
P0031 That started after the header. I think I need a bigger o2 spacer.
Thanks…
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 04-27-2007, 01:56 AM
asdfasdf128's Avatar
Registered User
 
Join Date: Apr 2006
Posts: 733
Thanks: 1
Thanked 6 Times in 5 Posts
iTrader: 1 reviews
i have the same code after i took off my intake manifold and header. Im gonna try getting new gaskets, but if you check out the vboard, they have a pretty good troubleshooting section.

Heres the link, not sure if you need membership to access it though:

The V Board :: Log in
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 04-27-2007, 03:38 AM
Registered User
 
Join Date: Jan 2004
Posts: 16
Thanks: 0
Thanked 0 Times in 0 Posts
iTrader: 0 reviews
I think I was incorrect... The P0031 is for the front o2 sensor not the one I had the spacer on. I just assumed it was that since the light came on immediately after installing the header.
That would make sense since the bank 1 sensor would tell the ECU to dump more fuel, which would seem to create the condition I have now.
I wonder if it went bad since the exhaust is actually flowing properly now. My old (3rd one) precat was so clogged up the engine wouldn't turn more then 4,500 rpm's. I'll put the voltmeter on it tomorrow and see if that's definitely it.
Thanks for the link..
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 04-29-2007, 03:24 AM
Registered User
 
Join Date: Jan 2004
Posts: 16
Thanks: 0
Thanked 0 Times in 0 Posts
iTrader: 0 reviews
Thumbs down

Well that didn't help... Still chugging along Replaced with a universal Bosch sensor I was able to reset the light and it stayed off for a couple of starts. Once on the road the light came back on and was flashing again.
I'm going to bring it back to Autozone and get the code pulled. Hopefully it will narrow it down to what cylinder is misfiring. I tried switching the coils around again and nothing changes. I'm starting to think it's something else.
Anyone got any ideas... I feel defeated.
Reply With Quote Quick reply to this message
  #5 (permalink)  
Old 04-29-2007, 11:57 AM
milkt.org
 
Join Date: Apr 2005
Location: Titusville, FL
Posts: 557
Thanks: 0
Thanked 0 Times in 0 Posts
iTrader: 0 reviews
You're not supposed to be driving it around if the SES/CEL is flashing.
SES/CEL 'ON' = something is wrong.
SES/CEL flashing = NOT GOOD

I had the same problem BEFORE I put my headers on.
Bogging a little, light flashing....

I am under warranty
and work at a Nissan dealer,
so the techs tried a few things.

The check list for this P0300 misfire is huge.
Many things to check and not cool for a tech
who is only getting paid warranty time (which sucks.)

We replaced the FRONT A/F ratio sensor on MY SE
and the bogging went away.
I'm still not sure that was the problem
because when I plug in the Consult II from time to time
the P0300 still shows a history.

My SES is pretty much constantly on and
I have no tuning right now (which MAY help),
but I have the Emanage Ultimate and Nismo cams poised for an install and tune.
__________________
05 Majestic SE
ebay $35 CAI (cut to WAI), SSAC Headers (ceramic coated), Greddy Evo2 exhaust, Eibach Proline, Nismo frt/rr anti-sways, AT ground, LSD (w/ 4.13 final drive), JW clutch, Fidanza FW, Gram Lights 57F bronze, Pirelli System 255/40zr18, Eracings fascia, AT S5, UR udp, AT SS
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Reply

  Nissan Forums : Nissan Forum > Nissanclub.com Nissan - Infiniti Enthusiast Forums > NISSAN ALTIMA FORUMS > 2002-2006 Nissan Altima Forums > Engine Performance (2002-2006)


Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Nissan Forums : Nissan Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
Display Modes

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 On


Powered by vBadvanced CMPS v3.2.2

All times are GMT. The time now is 03:50 AM.


Powered by vBulletin®. Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO 3.3.2
Garage Plus vBulletin Plugins by Drive Thru Online, Inc.