gt4 Headlight strangeness | FerrariChat
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gt4 Headlight strangeness

Discussion in '308/328' started by Andrew Smith, Aug 1, 2016.

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  1. Andrew Smith

    Andrew Smith Karting

    May 9, 2010
    81
    Southern Norway
    #1 Andrew Smith, Aug 1, 2016
    After years of working surprisingly well my LH headlight pod has now developed a strange habit. When I turn the the lights on it goes up, then down, then up and stays up. The RH light pod goes up and stays up.

    When the LH pod stays up it is also a centimeter or two lower than it should be, and the headlight aims too low.

    Any idea where I should start looking first?

    Many thanks as usual

    A
     
  2. 2281GT

    2281GT Formula 3
    Owner Silver Subscribed

    Oct 9, 2006
    1,134
    Germany
    Full Name:
    Markus
    #2 2281GT, Aug 1, 2016
    Check the Relay. There are many gremlins possible, but the Relay for the left Headlight-Motor is mostly possible the reason for that habit.
     
  3. mike32

    mike32 F1 Veteran

    May 13, 2016
    5,968
    Isle of man- uk
    #3 mike32, Aug 1, 2016
    Have a look on eurospares web site as there is a good diagram of the headlight lifting levers. There looks to be an adjustable link which might be coming loose or there may be some type of limit switch on the motor or gearbox. You might just have a bolt coming loose, but the diagram shows it in great detail
     
  4. jimgolf1

    jimgolf1 Formula Junior

    Aug 23, 2013
    375
    Reno, NV
    Full Name:
    Jim Small
    #4 jimgolf1, Aug 1, 2016
    Mine does weird stuff like that too. I just try to not drive at night. I'm guessing it's a weak ground.
     
  5. 256GAR

    256GAR Rookie

    Mar 10, 2004
    21
    SC Valley, LA.
    Full Name:
    Gareth H
    #5 256GAR, Aug 2, 2016
    If I remember correctly, the motors are the same as the fiat X1/9 and are easy to repair. Just open the gearbox case and clean out the old grease. It becomes electrically conductive with metal particles after many years and will cause the symptoms you described. There are brass contacts inside that assist in the raising/lowering and precision placement. Replace with fresh grease and you should be good.
     
  6. Andrew Smith

    Andrew Smith Karting

    May 9, 2010
    81
    Southern Norway
    #6 Andrew Smith, Aug 2, 2016
    Thanks fro the help guys. I dont see an external limit switch so I guess it must be in the gearbox. Also the actuating arms are a fixed length, so I'm not sure how to make LH and RH the same height, there is 20mm difference in height. The actuating arms seem to be at maximum lift when the lamp is up, I think it might just be a worn pivot point. Will let you know if I find anything of interest!
     
  7. Fave

    Fave F1 Rookie

    Aug 12, 2010
    4,157
    Tarana
    Full Name:
    L. Ike Hunt
    #7 Fave, Aug 2, 2016
    Y'all know there are some resistors on the head light lifter motors...

    Sent from my LG-H831 using Tapatalk
     

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