355 Alternator problem? | FerrariChat

355 Alternator problem?

Discussion in 'Technical Q&A' started by Swedish355, Jul 16, 2007.

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  1. Swedish355

    Swedish355 Rookie

    Jul 25, 2006
    9
    STOCKHOLM
    What do you think about this problem?
    My alternator is not charging (the warninglamp is lightened). My steering servo is not working and my water pump is not working (i dont really know that, but the water temprature rise fast to the red area)
    First i thought it was the drive belt that had Gone broken (the local Ferrari service has changed that drive belt only 4 months/1000 miles ago when the motor were out....) but when i looked from above i could se thet the small drive belt to the servo pump was SOMETIMES slowly moving. When it moves you can hear a unusual noise.

    Any ideas?


    Michael
    Sweden
     
  2. jm3

    jm3 F1 Rookie

    Oct 3, 2002
    4,364
    United States
    Full Name:
    JM3
    It is likely that the main belt, which you really cannot see past the power steering, is loose or broken. If you are lucky, it has just slipped on the tensioner. I believe in Sweden all you have is flatbed tow trucks, so send it back to the company that did the last service.

    Jay
     
  3. ernie

    ernie Two Time F1 World Champ
    Lifetime Rossa Owner

    Nov 19, 2001
    22,620
    The Brickyard
    Full Name:
    The Bad Guy
    #3 ernie, Jul 16, 2007
    Last edited by a moderator: Sep 7, 2017
    You should start by checking the tension on the accessory belts.

    Alternator:
    Check to make sure the belt it is tight. There is a tensioner bearing that is on the bottom of the engine, that has a bolt to adjust the pressure. Your alternator is on the bottom right (looking at the car from the rear). You can see the bolt from the bottom of the car. (the pictures below are what to look for) There is also a locking bolt, on the front of the bearing, that holds the tensioner bearing in place once the desired tension has been applied. You will want to make sure that is also tightened down. While you are under the car check the condition of the bearing. You are checking to make sure that the bearing has not seized up.

    Temperature:
    Same thing as with the alternator, make sure that the belt on the pump is tightened down properly.

    Have a look at those and then let us know what you find.
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  4. Swedish355

    Swedish355 Rookie

    Jul 25, 2006
    9
    STOCKHOLM
    The day after i took the car to the company that had served the car apox 1000 miles ago. After dismaounting the plastic shild under the car, we could
    regognise thet the belt tensioner had broken down. It was extremly tight to dismantle thet tensioner, but finally the mechanic succeded.
    Thank you for your help, i will look on Ferrari chat more in the future,
    yoy guys seem very skilful in trouble shooting to me.

    Big thanks!!


    /Michael
     
  5. ernie

    ernie Two Time F1 World Champ
    Lifetime Rossa Owner

    Nov 19, 2001
    22,620
    The Brickyard
    Full Name:
    The Bad Guy
    Glad I could help.

    Stick around, you'll like F-chat.
     

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