Slowdown 5-8 warning light on F355 ... | FerrariChat
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Slowdown 5-8 warning light on F355 ...

Discussion in '348/355' started by W00dEar, Jun 30, 2004.

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  1. W00dEar

    W00dEar F1 Rookie
    BANNED

    Feb 24, 2004
    3,592
    LI, NY
    Full Name:
    Chris
    #1 W00dEar, Jun 30, 2004
    The light comes on now and then, sometimes stay on a min or two, sometimes stay on longer. It does seem to go away when I reduce speed(for example exiting highway and driving on local at slower speed).

    If I am not mistake the warning light comes on when CAT is too hot, now I do not have a CAT, I have testpipe in place. Should I worry about the light at all?
     
  2. sjh355

    sjh355 Rookie

    Jul 1, 2004
    1
    USA
    Full Name:
    Simon Harrison
    #2 sjh355, Jul 1, 2004
    When mine did that it was an early warning of the valve guides getting worn. Is it getting harder to start? Or plugs fouling? Sorry to be gloomy. Good news is that if you get it fixed they use the "improved" material.
     
  3. ART360

    ART360 Guest

    #3 ART360, Jul 1, 2004
    Could be the sensor. What year is the car? The latest ones have much better sensors.

    Art
     
  4. bobafett

    bobafett F1 Veteran

    Sep 28, 2002
    9,193
    #4 bobafett, Jul 2, 2004
    Check your thermocoupler ECUs (still under warranty if it is a 97...better hurry though), and also the sensors. Could be because you ahve test pipes the ECUs are getting confused. If you are nto running cats, simlpy d/c the ECUs and be done with it.

    --Dan
     

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