F355 CHARGING SYSTEM PROBLEM | FerrariChat

F355 CHARGING SYSTEM PROBLEM

Discussion in 'Technical Q&A' started by TAFFSPEED, Feb 22, 2005.

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  1. TAFFSPEED

    TAFFSPEED Rookie

    Feb 18, 2005
    3
    LAS VEGAS, NV
    Full Name:
    VINCENT CHU
    I have a 1995 F355 and I seem to have a problem with the charging system.

    The battery light would flicker and turn on and off only after driving for about 45 minutes. If I turn off the car and restart it after say ten minutes the light would go off and then it would do the same thing after driving it again.

    I have replaced the battery and the alternator and it still does it.
    Does the car have a separate Rectifier or is it part of the alternator?

    I'm hoping that the rectifier is separate and that it's bad. If not, I'm lost!

    Thanks guys!
     
  2. Rifledriver

    Rifledriver Three Time F1 World Champ

    Apr 29, 2004
    36,856
    Cowboy Capitol of the World
    Full Name:
    Brian Crall
    The voltage regulator, rectifier are all contained in the alternator. 355's in general and 95's specifically have connectivity problems in their charging system, those are the most common charging problems and throwing parts at the car generally will not fix them. Some specific diagnostic work is required.
     
  3. BigHead

    BigHead Formula Junior

    Oct 31, 2003
    995
    Outside of Boston
    Full Name:
    Dennis
    First question - does your alternator have a separate ground strap? Every 355 should have one. ~$10 from the dealer, a few minutes to install. Without the strap, the alternator's ground becomes intermittant, and causes various charging problems. Very, very annoying....

    vty,

    --Dennis
     
  4. TAFFSPEED

    TAFFSPEED Rookie

    Feb 18, 2005
    3
    LAS VEGAS, NV
    Full Name:
    VINCENT CHU
    Thanks for your help guys!
    Checked the alternator..
    There is a separate ground lead that goes from the alternator to the frame.

    I'm going to do a full dianostic tommorow to find the source of the problem.

    I will let you know the results!
     
  5. ryme

    ryme Rookie

    Mar 15, 2005
    1
    Tremelo, Belgium
    Full Name:
    Danny Deraymaeker
    Hello there
    I own since 2000 a giallo fly F355, chassis 100042, I recently repalced the alternator, but still the charging light is flickering as follows
    first 3-7 km everything ok, no red light
    then for the next 150 -250 km, flickering below 4000 revs
    later on : no more red light

    When engine is cut and restarte 1 out of 2 the charging light stays off

    I do not know yet whether I have an extra ground strap
    Could fitting this alone cure my problem ?
     
  6. delaney

    delaney Formula Junior

    Nov 8, 2003
    716
    Montgomery TX
    Full Name:
    PETER DELANEY
    I had my '96 355 alternator rebuilt twice and it checked out on the bench perfectly. However I continued to have the same 'flickering' problem. Ultimately had to buy a new alternator ... ~ $1200.

    Pete
     
  7. 355_Challenge

    355_Challenge Formula Junior

    Oct 21, 2005
    926
    The Netherlands
    Full Name:
    Michaël

    :D aspecially if you connect the tom tom navigation on it haha :D

    anyway it drives great and it looks fantastic!
     
  8. f355spider

    f355spider F1 World Champ
    Owner Rossa Subscribed

    May 29, 2001
    18,033
    USA
    Friend of mine had similar problems with the Nippondenso alternator on his 348 spider...kept removing and testing it, always tested fine....but finally he removed it, and had them test it on the bench for 15 minutes or so...BINGO! The voltage would drop...it was heat related...worked fine cold, once it got hot, then the voltage dropped. They replaced the voltage regulator or something, and it has worked perfectly since.

    But as others have mentioned, make sure the connections (plug) are clean and tight, and the ground strap is present.
     

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