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430 Battery question?? Car doesnt start well

Discussion in '360/430' started by craze, Dec 26, 2021.

  1. craze

    craze Formula Junior

    Mar 5, 2021
    615
    Melbourne
    Full Name:
    Michael
    Just hoping for some advice
    Got my f430 1 yr ago
    Sat in dealer for 6 months not on tender
    Battery was apparently replaced prior to receiving it

    I always put it on tender ctek mks5

    In winter when it got colder i noticed sometimes id get the rough start

    Anyway car was at dealer for 2 months and apparently it wouldnt start a cell collapsed in battery

    Apparently changed under warranty

    It had been on for few months but now after f1 primes voltage is 11.9-12.1v, and often rough starts and if u shut off and start again often the error with 2 triangles comes up

    I checked and battery thats in it is a cheap supercrank $120usd battery
    I just replaced it with a yuasa agm was around $320usd

    Was my rough starts and above indicating lazy battery?

    Tender always showed charged

    When battery was new no rough idles
     
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  3. mike32

    mike32 F1 Rookie

    May 13, 2016
    4,210
    Uk
    A general guide is the voltage the battery drops too when you push the start button, too low and it will only run on one bank and be lumpy
     
  4. craze

    craze Formula Junior

    Mar 5, 2021
    615
    Melbourne
    Full Name:
    Michael
    Thank you
     
  5. Extreme1

    Extreme1 Formula Junior

    Jun 27, 2017
    823
    Santa Clarita, CA
    I suggest getting a Battery Load Tester. Amazon has them for $40-$50. You simply put the alligator clips on the battery terminals and push the button. It will tell you when your battery under load, is getting weak. They are nice to have in the garage for other cars, motorcycles, etc.

    It sounds like yours was getting weak. 11.9 - 12.1 is too low for a resting battery. The voltage probably dropped way more when you hit the start button.


    Sent from my iPad using FerrariChat.com mobile app
     
    craze likes this.
  6. craze

    craze Formula Junior

    Mar 5, 2021
    615
    Melbourne
    Full Name:
    Michael
    Apparently when turning over around 10v is ok

    Started car today with new agm and rough idle
    however restart no triangle suspension warning

    Ill try to let key initialize for 15 seconds prior to starting
     
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