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Slow Down Light????

Discussion in '348/355' started by GWood355, Jan 15, 2008.

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  1. GWood355

    GWood355 Karting

    May 24, 2006
    108
    Little Rock, AR
    Full Name:
    Gregory D Wood
    #1 GWood355, Jan 15, 2008
    I went out to dinner last weekend, drove about 8 miles to get there and had no problems. About 1.5 hours later I started the car up and before I got out of the parking lot the slow down light started blinking. I went a couple of blocks to a place I could pull over and looked it up in the owners manuel. When blinking you can drive far enough to get where you need to go, but if it stayed on you must stop immediately. I sat parked for about 10 minutes and tehn proceeded home. About 5 miles down the road the light stopped flashing and stayed off. I did not notice any noise, odor, rattle, fluid or any other problem and the car drove fine. Should I just drive on and see if it happens again or take the car and get it checked out. I am in LR, AR so it is not that simple to just go get it checked out. The nearest place would be Dallas. What would cause the problem?
     
  2. No Doubt

    No Doubt Seven Time F1 World Champ

    May 21, 2005
    72,740
    Vegas+Alabama
    Full Name:
    Mr. Sideways
    #2 No Doubt, Jan 15, 2008
    It's an either/or thing.

    Either an exhaust-monitoring ECU is acting up,

    or

    You have a fuel/air problem.


    Speaking broadly, shining the light from a cheap $20 laser thermometer onto each catalytic converter should tell you if you have a cat that is in danger of overheating (a very real fire danger, if so).

    If a cat isn't overheating, then you typically end up replacing at least one cat ECU (some tests can be done to see if that's the right course of action).
     
  3. UConn Husky

    UConn Husky F1 Rookie

    Nov 11, 2006
    4,425
    CT
    Full Name:
    Jay
    #3 UConn Husky, Jan 15, 2008
    I only had a slow down light once, when I had the heat shield under the air cleaners off while I was messing with the exhaust valve. First thing I would do is plug in an OBDII reader and look for any check engine codes, those could point you in the right direction.
     
  4. Ricambi America

    Ricambi America F1 World Champ
    Sponsor Owner

    Dec 7, 2003
    16,451
    Winston Salem, NC
    #4 Ricambi America, Jan 15, 2008
    Sounds like it is simply a cat ECU that has failed. There are plenty of threads on fchat for diagnois and replacement. If I weren't on this iPhone (which has no cut-and-paste) I'd offer up so links. :(

    Other chaps can help I'm sure.
     
  5. 285ferrari

    285ferrari Two Time F1 World Champ
    Sponsor

    Sep 11, 2004
    20,958
    MD and NE
    Full Name:
    Robbie
    #5 285ferrari, Jan 15, 2008
    Silicone those bad boys up and don't look back!!! :D:D:D I did all 3 of them when I installed my X-OST so I wouldn't have to worry about them...Black silicone
     
  6. UConn Husky

    UConn Husky F1 Rookie

    Nov 11, 2006
    4,425
    CT
    Full Name:
    Jay
    #6 UConn Husky, Jan 15, 2008
    +1 on that, while doing the engine out I found them and all three are cracked. Time to seal them up and save $500 each (IIRC).
     
  7. Saint Bastage

    Saint Bastage F1 Rookie

    Jun 1, 2007
    2,548
    Connecticut
    Full Name:
    Lane
    #7 Saint Bastage, Jan 15, 2008
    After you seal them up..the only "slow down" light your gonna see is the "Slow the @#$% down" light mounted on the police car.
     
  8. 285ferrari

    285ferrari Two Time F1 World Champ
    Sponsor

    Sep 11, 2004
    20,958
    MD and NE
    Full Name:
    Robbie
    #8 285ferrari, Jan 15, 2008
    iPhone----must be nice, I am still using my bag phone from 1989...:D
     
  9. 285ferrari

    285ferrari Two Time F1 World Champ
    Sponsor

    Sep 11, 2004
    20,958
    MD and NE
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    Robbie
    #9 285ferrari, Jan 15, 2008
    I hate seeing that light...
     
  10. Gershwin

    Gershwin F1 Veteran

    Feb 21, 2005
    6,415
    Kentucky
    #10 Gershwin, Jan 15, 2008
    WOW - never heard of this. I've had this happen a couple times, even found one that installed backwards. I'm calling my guy and requesting this. Super Idea!
     
  11. gothspeed

    gothspeed F1 World Champ

    May 26, 2006
    10,244
    U.S.A.
    Full Name:
    goth
    #11 gothspeed, Jan 15, 2008
    +1... I had one cracked ECU I siliconed it and installed it in the 'bypass' valve position.... :)!!


    :p
     
  12. Night life

    Night life F1 Veteran
    Silver Subscribed

    Dec 1, 2007
    7,288
    The city that rhymes with fun in Canada
    Full Name:
    Roberto
    #12 Night life, Jan 16, 2008
    Why does that not surprise me.............lol.....:)
     

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