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348 runs rough on startup

Discussion in 'Technical Q&A' started by weepee, Jul 20, 2015.

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  1. weepee

    weepee Rookie

    Apr 16, 2010
    5
    uk
    Full Name:
    paul gray
    #1 weepee, Jul 20, 2015
    my 348 has started to run rough on start up after she is warm it seems fine any thoughts
     
  2. John_K_348

    John_K_348 F1 Rookie

    Sep 20, 2013
    2,757
    Boston, MA
    Full Name:
    John E. Kenney
    #2 John_K_348, Jul 20, 2015
    Gas? Spark plugs? When's the last time she had a tune up? Try some Techron. Any slow down lights?
     
  3. Schatten

    Schatten F1 World Champ
    Owner

    Apr 3, 2001
    11,238
    Austin, TX
    Full Name:
    Randy
    #3 Schatten, Jul 20, 2015
    In addition to John's q's: Startup procedure? Battery cut off and letting the ECUs get past their learning mode?
     
  4. chas-3

    chas-3 Formula 3
    Silver Subscribed

    Jan 28, 2009
    1,281
    Colorado
    Full Name:
    Chuck
    #4 chas-3, Jul 20, 2015
    Check the cold idle system? :)
     
  5. ernie

    ernie Two Time F1 World Champ
    Lifetime Rossa Owner

    Nov 19, 2001
    22,620
    The Brickyard
    Full Name:
    The Bad Guy
    #5 ernie, Jul 22, 2015
    This will get you through the initial warm up procedure. Try disconnecting the battery for :15 seconds, reconnect the battery, start the car (with ALL the accessories turned OFF) and let the engine idle for at least 15 minutes and do NOT touch anything, let it idle until the cooling fans run through at least one on/off cycle. Then take it for a 30 minute drive.
     

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