ECU Codes Cleared - Still Running On 1 Bank??? | FerrariChat
Buy

ECU Codes Cleared - Still Running On 1 Bank???

Discussion in '348/355' started by roverelf, Nov 9, 2007.

This site may earn a commission from merchant affiliate links, including eBay, Amazon, Skimlinks, and others.

  1. roverelf

    roverelf Rookie

    Aug 26, 2005
    46
    Pittsburgh, PA
    Full Name:
    John Ellefson
    #1 roverelf, Nov 9, 2007
    Hi All:

    Well, I disconnected the battery after installing the new O2 sensor and fuse for the air pump (it was shot.....thanks). Car still runs like crap, though. When started, the 5-8 bank gets hot, but the 1-4 is ice cold. Any next suggestions? Thanks again for all the guidance.

    JE
     
  2. f355spider

    f355spider F1 World Champ
    Owner Rossa Subscribed

    May 29, 2001
    18,054
    USA
    #2 f355spider, Nov 9, 2007
    Probably the next thing to check is the cat ECUs. When one trips it will shut down that bank. There are three of them, 1-4 bank, 5-8 bank, and the bypass cat. I would swap your 1-4 with 5-8 and see if the problem swaps sides. If so, you need a new cat ECU for the offending side.
     
  3. roverelf

    roverelf Rookie

    Aug 26, 2005
    46
    Pittsburgh, PA
    Full Name:
    John Ellefson
    #3 roverelf, Nov 9, 2007
    Thanks again. Tonight's mission is to swap the cat ECUs first. If no work, try to swap the coil packs (suggestion from Foreign Cars Italia).

    JE
     
  4. No Doubt

    No Doubt Seven Time F1 World Champ

    May 21, 2005
    72,740
    Vegas+Alabama
    Full Name:
    Mr. Sideways
    #4 No Doubt, Nov 9, 2007
    Swap fuel pump relays *after* doing the above-mentioned swaps.

    Check sparks on the plugs on the cold side.
     
  5. f355spider

    f355spider F1 World Champ
    Owner Rossa Subscribed

    May 29, 2001
    18,054
    USA
    #5 f355spider, Nov 9, 2007
    You might start with the coils, they are much easier to access.
     
  6. roverelf

    roverelf Rookie

    Aug 26, 2005
    46
    Pittsburgh, PA
    Full Name:
    John Ellefson
    #6 roverelf, Nov 9, 2007
    OK, swaped cat ECUs, coil packs, and fuel pump relays.....still the same problem, 1-4 bank has no power. Any more thoughts/ideas??? Geez, I'm learnin' Ferraris pretty quikly........

    John
     
  7. No Doubt

    No Doubt Seven Time F1 World Champ

    May 21, 2005
    72,740
    Vegas+Alabama
    Full Name:
    Mr. Sideways
    #7 No Doubt, Nov 9, 2007

    Do your 1-4 spark plugs spark?
     
  8. roverelf

    roverelf Rookie

    Aug 26, 2005
    46
    Pittsburgh, PA
    Full Name:
    John Ellefson
    #8 roverelf, Nov 9, 2007
    What's the best way to check that?

    John
     
  9. ernie

    ernie Two Time F1 World Champ
    Lifetime Rossa Owner

    Nov 19, 2001
    22,620
    The Brickyard
    Full Name:
    The Bad Guy
    #9 ernie, Nov 9, 2007
    Try unplugging the cat ecu's all together and see what that does when you start the car?
     
  10. roverelf

    roverelf Rookie

    Aug 26, 2005
    46
    Pittsburgh, PA
    Full Name:
    John Ellefson
    #10 roverelf, Nov 9, 2007
    Tried it, but it seems even worse. Both slow down lights came on, which is, I suspect, normal. For what it's worth, I can hardly breathe in my garage after only running the car for 30 seconds.....
     
  11. No Doubt

    No Doubt Seven Time F1 World Champ

    May 21, 2005
    72,740
    Vegas+Alabama
    Full Name:
    Mr. Sideways
    #11 No Doubt, Nov 9, 2007
    Remove the wire to the #4 spark plug. Unscrew the plug. Reconnect the plug wire to the #4 spark plug. Lay the plug on top of the metal intake plenum (or grounded by any other large amount of metal).

    Start the car. Examine if the #4 plug is sparking. Easy to see if so. Easy to see if not.

    This will tell you if you have spark to that side.
     
  12. roverelf

    roverelf Rookie

    Aug 26, 2005
    46
    Pittsburgh, PA
    Full Name:
    John Ellefson
    #12 roverelf, Nov 9, 2007
    Thanks. I'll try that first thing in the morning. Provided I have no spark, which is what I expect, what might I look to next?

    John
     
  13. No Doubt

    No Doubt Seven Time F1 World Champ

    May 21, 2005
    72,740
    Vegas+Alabama
    Full Name:
    Mr. Sideways
    #13 No Doubt, Nov 9, 2007
    Keep in mind to wear some thick gloves in case you do have spark.

    Now, if there is no spark, then you'll next look at the coil signal and exhaust ecu.

    On the other hand, if you do have spark, then you'll want to hot-wire the 1-4 fuel pump for a test of a failed pump (easy to do via the relay that you swapped earlier).
     
  14. roverelf

    roverelf Rookie

    Aug 26, 2005
    46
    Pittsburgh, PA
    Full Name:
    John Ellefson
    #14 roverelf, Nov 9, 2007
    Thanks No Doubt. Hopefully tomorrow will be my lucky day!

    John
     
  15. Ferraripilot

    Ferraripilot F1 World Champ
    Owner Project Master

    May 10, 2006
    17,888
    Atlanta
    Full Name:
    John!
    #15 Ferraripilot, Nov 10, 2007
    I have been readingred thread with great. Did you figure out the issue today? Sounds like a spark issue to me, but I am very new to 348/355.
     
  16. roverelf

    roverelf Rookie

    Aug 26, 2005
    46
    Pittsburgh, PA
    Full Name:
    John Ellefson
    #16 roverelf, Nov 10, 2007
    No solution yet. I am going to see if I have spark later today.....
     
  17. No Doubt

    No Doubt Seven Time F1 World Champ

    May 21, 2005
    72,740
    Vegas+Alabama
    Full Name:
    Mr. Sideways
    #17 No Doubt, Nov 10, 2007
    Well?!
     
  18. mwhitesell

    mwhitesell Formula 3

    Sep 17, 2006
    1,083
    Atlanta
    Full Name:
    Mark
    #18 mwhitesell, Nov 10, 2007
    I hope he didn't see a spark and blow up.
     

Share This Page