Slow Down Light 1-4 stays on all the time | FerrariChat
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Slow Down Light 1-4 stays on all the time

Discussion in 'Technical Q&A' started by mmmojo308, Nov 21, 2006.

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  1. mmmojo308

    mmmojo308 Rookie

    Nov 20, 2006
    8
    Southern California
    Full Name:
    Mike
    #1 mmmojo308, Nov 21, 2006
    Hi, I am a new member so let me apologize in advance if this issue has been discussed for my model. I recently purchased a 1980 308 GTSi with a Slow Down light issue. The slow down light (1-4) stays turns on in ignition mode and stays on all the time while driving the vehicle. There is no loss of power, sputtering, hesitation, etc. while I am driving the vehicle. The only other weird thing is that when the car is cold, it will idle at about 2,000 rpm for about 45 seconds to a minute and then come down to just under 1,000 rpm. I don't know if any of this is related.

    I've also been looking for a workshop manual for my year and model but I have been unsuccessful thus far.

    Any help/suggestions would be really appreciated.
    Thanks!!
     
  2. 330gt

    330gt Formula 3

    Nov 12, 2004
    2,097
    Seattle, WA
    Full Name:
    Kerry Chesbro
    #2 330gt, Nov 21, 2006
  3. mmmojo308

    mmmojo308 Rookie

    Nov 20, 2006
    8
    Southern California
    Full Name:
    Mike
    #3 mmmojo308, Nov 23, 2006
    Thanks for the link. I appreciate it.
     
  4. sparta49

    sparta49 F1 Veteran
    Owner

    Mar 3, 2001
    7,804
    LA
    Full Name:
    Frank
    #4 sparta49, Nov 23, 2006
    Most likely the CAT ECU I believe it is located below the pass footrest on the 308's . If it isn't the ecu it is the probe going into the cat.
     
  5. Doc

    Doc Formula Junior

    Sep 13, 2001
    886
    Latham, New York
    Full Name:
    Bill Van Dyne
    #5 Doc, Nov 23, 2006
    I don't think that the idle is off at all. I had an '85 308 which started and idled in exactly the same manner and there was no problem. The colder the weather , the higher and longer the start up idle was. As long as it's steady and there is no mifiring or wavering, it should be fine.

    I had a friend with a 328 whose slow down light was always on also. He had taken it to 3 mechanics , everything always checked out fine ( including removing and inspceting the cat), and it never went away. The always ran fine. His conclusion was that it was likely a fault in the wiring .
     

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