kawarex

I have had this Focus 1.8 TDCi for about 2 and a half years now it is on an 04 plate. Last year the battery light came on sporadically and the battery kept going flat so i replaced the battery and had a new alternator fitted and all was fine. About 6 weeks ago when we had the first really cold snap i went out to start the car and it was totally dead? I took the battery ( BOSCH 3 year guarantee) back to the motor factors to be checked out and it had a cell that had gone short circuit ? I got a Yuasa one this time and went away thinking all would be good. Three days later this was flat so i took it to a reputable place i have dealt with before to get things checked out. They said the alternator was fine but the new battery only had 50% cranking power ( Tested with a Bosch test unit) so i took it back to the motor factors after i had charged it over night and they tested it with a similar Bosch test unit and said it was 80% ???? So i thought sod it took a risk and bought anoather battery off another supplier ....but again after 2 days it's flat again !!!!
I charged it up overnight and went out in the car the next day when i indicated right the warning buzzer from the towbar set up was sounding although i wasn't towing anything !! I investigated and found the boot carpet soaked and the wheel well in 2" of water. Tried the pouring water over the boot shuts but couldn't see it coming in. I then found the boot latch loose so i set this up sealed the light unit mounts with copiuos amounts of vasaline and removed all the wet articles. I then removed all the wiring for the towbar and thought this would be it. Charged it up and ran around as usual but no .... 2days and it was totally dead again ???!!!!!
Any ideas of common faults or what to try next would be gratefully appreciated. I have had a meter across the terminals and it is charging at 14.2 Volts and ok when under load i.e. fan, lights on etc. Can't see it pulling anything when the ammeter is on it either. Getting really frustrated with it now !!!!!! I feel a gallon of Super Unleaded and a Zippo coming on :-(

Hi all, i have another issue with our Puma, there is only what i can describe really as a farting sound coming from under the engine bay ( to the left side as you are driving it) and when you brake the abs is coming on intermittantly and then the ABS and traction Control lights come on the dash. Is it a duff abs wheel sensor and how do you find out which one ?? Cheers Andy.