Page 1 of 3 123 LastLast
Results 1 to 15 of 36
  1. #1
    Join Date
    Feb 2009
    Location
    New Jersey
    Posts
    1,880
    Post Thanks / Like

    P0300 random misfire

    Just Got this code. Just got my h/c/i installed a couple weeks ago and tuned and the car has been running great. I had been running two codes prior P0420 and P0430, but that was in the tune that was fixed the other day. Today the check engine light came for this one, any ideas? Tune? The car isnt sputtering, no difference in idle, accelerates fine, what could it be?
    PPP stage 2 Heads, Super Spartan Max Cam, Inertia Ported/Coated Intake, Zoomer's, Kooks, no cat's, Jet 180 t-stat, BT catch can.
    435rwhp/413rwtq..mustang dyno

    More to come



  2. #2
    Join Date
    Mar 2008
    Location
    Chi-Town
    Posts
    2,356
    Post Thanks / Like
    Normal bud...nothing to worry about until you start seeing individual cylinder misfire codes....with a heads and cam setup, PO 300s are normal especially when it's colder outside.
    2006 Dodge Charger R/T
    2013 Chrysler 300S

  3. #3
    Join Date
    Apr 2007
    Location
    New York
    Posts
    1,192
    Post Thanks / Like
    It's a code that i think just about everyone has gotten with a H/C/I install. and even with just a cam install, I get the code every once in a while still. Just clear it with the predator and you should be fine.
    HHP Stage 2 Package. PB, 11.45 @ 118.........goal achieved!!!!!!

  4. #4
    Join Date
    Jun 2010
    Location
    Tempe, AZ
    Posts
    3,387
    Post Thanks / Like
    Lol I literally get that about 4-5 times a day, 7 days a week. Its because of the cam, nothing to worry about buddy
    The 11:1 426 is gone but a new project is almost done....... a 10 second one

  5. #5
    Join Date
    Oct 2009
    Location
    NW Houston
    Posts
    599
    Post Thanks / Like
    I got that code 1 day when i was out dogging the crap out of my car (having fun).
    Cleared it and it hasn't come back yet. But I haven't drove the crap out of it again. Yet.
    Chrome MagnaCharger TVS2300
    PWR Blower Cam by CHT
    Getrag 3.06 w/226mm Axles
    Legmaker True CAI
    Mopar Catback
    AEM Boost And Wideband Gauges

  6. #6
    Join Date
    Feb 2009
    Location
    New Jersey
    Posts
    1,880
    Post Thanks / Like
    Thanks all! I thought it was that...

  7. #7
    Join Date
    Jun 2010
    Location
    Tempe, AZ
    Posts
    3,387
    Post Thanks / Like
    ^^ Actually we all lied to make you feel better, that code means you blew a hole in your motor, your best bet is to just ship me your heads, cam, and block and call it a day.... :P

  8. #8
    Join Date
    Feb 2009
    Location
    New Jersey
    Posts
    1,880
    Post Thanks / Like
    lol dont forget the problem you had before your tune! Haahahaha, oh and yes ill ship my heads and cam...just ship your car without the wheels

  9. #9
    bipto's Avatar
    bipto is offline "If you like your LXF, you can keep it"

    Join Date
    Aug 2004
    Location
    New Hampshire
    Posts
    15,078
    Post Thanks / Like
    Ya, the P0300's are no big deal. I see them occasionally and most times I wont even have to clear them because they'll reset after a few good trips...
    "It's not that I'm old - your music really does suck..."
    See The Iron Mistress Galleries
    ***
    R.I.P. Dave Coults ***

  10. #10
    Join Date
    Feb 2009
    Location
    New Jersey
    Posts
    1,880
    Post Thanks / Like
    Thanks Bipto! I got nervous but I had a feeling...

  11. #11
    Join Date
    Oct 2009
    Location
    Sitting next to Harvey Dent. "Hi."
    Posts
    7,800
    Post Thanks / Like
    SperMax in it?
    In my dream the world had suffered a terrible disaster.
    A black haze shut out the sun and the darkness was alive.
    Suddenly a small light glowed. A candle flickered into life. A symbol of hope!
    A single tiny candle, shining in the ugly dark.
    I LAUGHED and blew it out!

  12. #12
    Join Date
    Feb 2009
    Location
    New Jersey
    Posts
    1,880
    Post Thanks / Like
    Bad batch caused the random misfire.

  13. #13
    Join Date
    Oct 2009
    Location
    Sitting next to Harvey Dent. "Hi."
    Posts
    7,800
    Post Thanks / Like
    Quote Originally Posted by NightMare View Post
    Bad batch caused the random misfire.
    DNA test reveil......................... Muscleman's been here!!!!!!!!!!

    illlllllllllllllllllllll!!!!!!!!!!!!!!!!!!!!!!

  14. #14
    Join Date
    Apr 2006
    Location
    Huntersville, NC
    Posts
    5,855
    Post Thanks / Like
    Have your tuner raise the threshold to 3k rpm, and that will keep it away for daily driving. I'll only get it now if I'm auto sticking and holding it above 3k for a while.
    Stock 5.7






  15. #15
    Join Date
    Feb 2009
    Location
    New Jersey
    Posts
    1,880
    Post Thanks / Like
    Now I have a P0302, cylinder two misfire...what could it be and should I drive it?!

Page 1 of 3 123 LastLast

Share This Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •