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550 Engine cut-out problems

Discussion in '456/550/575' started by Wyo550, Feb 9, 2005.

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  1. Wyo550

    Wyo550 Karting
    BANNED

    Feb 9, 2005
    61
    Laramie
    Full Name:
    John
    #1 Wyo550, Feb 9, 2005
    I'm driving a 1997 550 that exhibits occasional "stalling" during acceleration/ cornering-- whether the ASR is engaged or not. It's been suggested that the problem could be:
    1. Fuel starvation (as I'm cornering or accelerating! I usually run the tank at 1/2 to 1/4 full for weight)
    2. Magnetic wheel sensors are dirty. And during cornering, their data is triggering the ECU somehow.
    3. Fuse box is vibrating as body/frame flexes and the electricals are cutting out.
    4. ASR timing is deficient (but again, the problem occurs even when the ASR is disengaged)
    5. Yaw sensor?
    It's really disconcerting to be driving a six-figure 550 that stalls like a 1960 Fairlane, when coming down an interstate onramp and some fool's on your tail! I'm afraid I'm going to end up with a fool in my trunk one of these days!
    Thanks for your ideas/ experiences. John
     
  2. ze_shark

    ze_shark Formula 3

    Jul 13, 2003
    1,274
    Switzerland (NW)
    #2 ze_shark, Feb 10, 2005
    Does the ASR warning show up on the central indicator when the car exhibits such behaviour ?
    Would be hard to believe that the problem affects all ASR functions (rear brakes and ECU), but does not trigger the dash warning.

    The fact that the problem occurs as well when the ASR is switched off is an indication that the root cause may be somewhere else.
    SD2 error codes ?
     
  3. stephens

    stephens F1 Rookie
    Lifetime Rossa

    Feb 13, 2004
    4,647
    Australia
    Full Name:
    Stephen S
    #3 stephens, Feb 10, 2005
    There is a roll-over fuel shut-off valve which, if it is not mounted properly, could cause the problems you have been experiencing. There is a warning about ensuring it is mounted vertically in the manual.
     
  4. Ferrari 1

    Ferrari 1 Karting

    Nov 3, 2003
    175
    Fort Lauderdale
    Full Name:
    Benn Correale
    #4 Ferrari 1, Feb 14, 2005
    Have you had any aftermarket stereo work done? If so, go up one post to Stephens post....seen it happen before.
     
  5. garysp7

    garysp7 Formula Junior

    Mar 28, 2004
    436
    Florida
    Full Name:
    Gary
    #5 garysp7, Feb 14, 2005
    I would suggest trying it for a while with a full tank of gas. If it is ok, you know what the problem is. If not, then I might consider running diagnostics to confirm that the asr is in fact off when the problem ocurs.
    I exsperinece a similar problem with my asr most of the time when I am wailing in my 550. Hence, I always drive it with the asr disabled.
     
  6. ferrarifixer

    ferrarifixer F1 Veteran
    BANNED

    Jul 22, 2003
    8,520
    Melbourne
    Full Name:
    Phil Hughes
    #6 ferrarifixer, Feb 15, 2005
    Is it any different when Sports mode is selected?

    Is your fuel quality assured of good octane and no water/contaminants?
     
  7. davehelms

    davehelms F1 Rookie

    Jan 3, 2004
    4,629
    Full Name:
    Dave Helms
    #7 davehelms, Feb 15, 2005
    Check the fuel filters. Have run into (4) 550's now where they were plugged with debris from the rubber parts of the fuel pump melting. Same symtoms.
    Dave
     

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