Throwin a code lil help please

Discussion in 'Modifications & DIY how-to' started by stimanmark, Mar 8, 2011.

  1. stimanmark

    stimanmark Member

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    So my engine light came on the other day and the cruise light is flashing so scanned it at work and it read....cylinder 3 misfire. I have Trust cone filter, catless downpipe, weld on muffler. Any ideas? Anybody had this problem before? why is the cruise lighting up? please help

    I put iridium plugs in my car about a yr ago....i have done compression tests before and everything checked out.

    Im about to do my headgaskets, headbolts, valve seals
     
    #1 stimanmark, Mar 8, 2011
  2. wrxin8or

    wrxin8or Mullitt
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    cruise light flashing is usually an overboost IIRC

    are you tuned?
     
    #2 wrxin8or, Mar 8, 2011
  3. Matt

    Matt Think before you post
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    the cruise light comes on anytime the CEL comes on. It's to help get your attention. You'd be surprised at the people who ignore the CEL.

    with those mods, do you have any sort of tune or anything?
     
    #3 Matt, Mar 8, 2011
  4. stimanmark

    stimanmark Member

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    no tuning. i have talked to serval ppl that have had the same setup with no issues until getting tuned. My understanding was that with this a tune will help but isnt necessary
     
    #4 stimanmark, Mar 8, 2011
  5. integroid

    integroid
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    Why are you about to do the above?

    How many miles are on the car? Misfire could be from a bad plug, coil pack, injector, etc. Could be a lot of things but I would start with the listed above.
     
    #5 integroid, Mar 8, 2011
  6. midnight_rider

    midnight_rider Member

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    Id start by clearing the codes,swapping the coil on 3 to another cylinder to see if the misfire follows and go from there. If not Id check for vacuum leaks, basic stuff.
     
    #6 midnight_rider, Mar 8, 2011
  7. goixiz

    goixiz Active Member

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    assume no cats at all
     
    #7 goixiz, Mar 8, 2011
  8. stimanmark

    stimanmark Member

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    I didnt think about that....thanks for the help
     
    #8 stimanmark, Mar 9, 2011
  9. stimanmark

    stimanmark Member

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    huh?
     
    #9 stimanmark, Mar 9, 2011
  10. stimanmark

    stimanmark Member

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    88k on my car, thanks for the help
     
    #10 stimanmark, Mar 9, 2011
  11. dragonle87

    dragonle87 New Member

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    What's the code?
     
    #11 dragonle87, Mar 9, 2011
  12. stimanmark

    stimanmark Member

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    dont remember the number and all.....but it reads Cylinder #3 misfire
     
    #12 stimanmark, Mar 11, 2011
  13. stimanmark

    stimanmark Member

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    weird thing..... I have always put 93-O in my car....here lately the one gas station that i had been getting my gas from....didnt have ethanol in their gas. Well now they do and i have put 3/4 tank of gas of that crapanol in my car twice. After that was when my engine light came on. 2 days ago i filled my car up with non-ethanol and drove down the road and the light went out. Went home, took a shower......got back in my car and started it.....engine light came back on :-/
     
    #13 stimanmark, Mar 13, 2011
  14. John

    John Active Member

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    That would be p0303 iirc

    Sent from my Android powered HTC HD2
     
    #14 John, Mar 13, 2011
  15. stimanmark

    stimanmark Member

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    yea pretty sure it was that code
     
    #15 stimanmark, Mar 17, 2011
  16. stimanmark

    stimanmark Member

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    well the #3 spark plug is either melted or has alot of carbon build up.....i went to back the plug out and it was tight as crap....same way with tighting it back up. So it will stay in there til im ready to pull the engine and pull the heads off for headgasket work. Might have to fix that spark plug hole......oh well.....parts ordered....now for them to get here so i can get the engine pulled. joy joy!
     
    #16 stimanmark, Apr 2, 2011
  17. b reel

    b reel Active Member

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    e rode ed e lec trode = no fire under boost

    would be more concerned about valve seats than the valve seals
     
    #17 b reel, Apr 2, 2011
  18. stimanmark

    stimanmark Member

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    car only misfires when its cold.....once warmed up it runs just fine
     
    #18 stimanmark, Apr 2, 2011
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