Author Topic: flat battery  (Read 1075 times)

Offline picky

  • Just got here
  • *
  • Posts: 7
flat battery
« on: 22 December 2009, 19:23 »
Hi there,on goin prob,my battery keeps goin flat after a few days.The car has an alarm+imob its a delta alarm,dont know what make the immob is?.The alarm arms and disarms fine but the led starts 2 flash when drivin,also the ctrl locking doesnt work,when i wire the pump up 2 a batt it pumps fine.Thought i might ask here b4 an autospark bankrupts me :cry:CHEERS

Offline boneybradley

  • Forum Supporter
  • Serious forum addict
  • *****
  • Posts: 9,482
  • Back in a Mk3...
Re: flat battery
« Reply #1 on: 22 December 2009, 19:46 »
get the battery a proper overnight charge and take it to your local motor accessory place (most offer free battery testing) but it sounds like it's days are numbered to me!
Moderator of The Dub-Tug Squad!! (What some call the MK3 section!)



Full range of quality parts for your Volkswagen available at Oemandmore.co.uk

Offline picky

  • Just got here
  • *
  • Posts: 7
Re: flat battery
« Reply #2 on: 22 December 2009, 19:48 »
sorry ment to add it is a new batt and it is ok.cheers

Offline boneybradley

  • Forum Supporter
  • Serious forum addict
  • *****
  • Posts: 9,482
  • Back in a Mk3...
Re: flat battery
« Reply #3 on: 22 December 2009, 19:50 »
sounds like some things draining it....check the door switches aren't pulling power (that work the light)
Moderator of The Dub-Tug Squad!! (What some call the MK3 section!)



Full range of quality parts for your Volkswagen available at Oemandmore.co.uk

Offline raferackstraw

  • I live here
  • *****
  • Posts: 904
Re: flat battery
« Reply #4 on: 22 December 2009, 20:20 »
get a multimeter and set it to amps scale of 20 at the most, disconnect the batt negative lead a nd connet the meter btween the batt lead and battery terminal, if there is a drain you will see a reading usually above 2 amps [i think], then what you do is pull each fuse in turn and see if the amps drop, that is the faulty circuit when you see the drop
this will isolate the fault to a certain circuit you then need to find the faulty component.
this is done with ignition off
i would start with the stereo fuse first as usually they are wired incorrectly by previous owner
iirc 0.5 amps is about the correct voltage drop on a good car with no electrical issues

also check alternator is charging at around 14.5v across battery when engine idling

wayne gardner smokes one rothmans too many
500cc 2stroke bad for ya health