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Topic: Battery discharging when Parked (Read 601 times) |
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KronosKeylock
Newbie
Why do you need a 3 litre?
 
Posts: 35
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Battery discharging when Parked
« on: Sep 13th, 2006, 11:43am » |
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My 2.9 12 valve keeps running the battery down when parked up for any length of time. I have a third party alarm on the car, is this the most likely culprit?
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2.9 !12 Valve
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the_machine
Full Member
I'm a YaBB newbie!
Posts: 121
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Re: Battery discharging when Parked
« Reply #1 on: Sep 13th, 2006, 11:53am » |
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mine was doing this recently.
changed the battery and it was ok (also made sure it was getting the proper charging power/ voltage)
ask your local spares / garage to check battery.
an alarm should not drain a battery that quick.
dont forget from the alarm manufacturers point of view, they are in the business of selling alarms, they dont want to design something that flattens batteries, alarms dont normally do this , i mean i would expect a couple of weeks before the battery runs down.
you can also buy a solar charger that keeps it topped up . you put them on the dash when you leave the car for any length of time (say on hoidays) at plug it into the cigarette lighter.
my garage put the wrong battery on mine and caused a nightmare, so get the CORRECT rating battery.
check your alternator output.
if all else fails, check for current drain (or ask auto electrician) you use an ammeter on the battery terminal to monitor its output, then one by one isolate the circuits via fuses.
yes ALARM and RADIO are potential culprits but only if faulty.
other potentials are leaking water into a control box, failed components in the car that are causing heavy drain, these must be located systamaticallly.
i reccomnend an auto electrician if the battery does not fix it.
check battery using a 'drop tester' from car spares shop (ask them to do it)
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Jonny_boy
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Posts: 14
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Re: Battery discharging when Parked
« Reply #2 on: Sep 13th, 2006, 12:04pm » |
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Hi, mine was also doing this, if I parked it up for a couple of days it would be dead, but I replaced the battery and after a week its still fine.
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taliban aka Cheekyboy2
Senior Member
I'm a YaBB newbie!
Posts: 1552
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Re: Battery discharging when Parked
« Reply #3 on: Sep 13th, 2006, 12:40pm » |
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well we're getting to the time of year when this will happen to lots of people, during the hot weather, fine, as soon as colder weather comes in, dead batteries everywhere, im just waiting for mine to do it....... 
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Simmo
Administrator
I'm an OAP !
Posts: 5508
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Re: Battery discharging when Parked
« Reply #4 on: Sep 13th, 2006, 1:36pm » |
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K K, whilst not disagreeing with any of the previous posts it is a fact that 'aftermarket alarms' can be a source of electrical problems on the Scorpio because of its' sophisticated electrics.
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Octavian_P
Senior Member
 
Posts: 1126
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Re: Battery discharging when Parked
« Reply #5 on: Sep 13th, 2006, 4:23pm » |
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Also check the light in the glove box, in some cases (most of ) it remains on, the the glove box hinges deteriorate a bit, and just a 1-2 mm play in the hinge is enough not to triger the shut off switch.
I also have an aftermarket alarm added, and the scorp stood un-started about 3 weeks, and still fires at a flick of a key. Also check you battery, how old, what rating. My battery before packing up it would discharge in 2-3 days, i was charging it and then it was ok for another 2-3 days, now i have a new calcim batter....no more problems.
Also to check if the electrics on the car really have a problem you could disconnect the + terminal and connect a amp-meter betwen the battery and the + terminal of the car, with the courtesy lights switch off, dors closed...etc....the current draw should be under 200 mA.....if it's greater the something is dischargeing the battery
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2.0 16V Ultima|2.3 16V Ghia|2.9 24V Cosworth Ghia
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KronosKeylock
Newbie
Why do you need a 3 litre?
Posts: 35
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Re: Battery discharging when Parked
« Reply #6 on: Sep 13th, 2006, 6:13pm » |
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Thanks Guys, dont you just love car electrics, the glove box light seems a suspect at the moment, will investigate 
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KronosKeylock
Newbie
Why do you need a 3 litre?
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Re: Battery discharging when Parked
« Reply #7 on: Sep 13th, 2006, 6:14pm » |
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Soz Battery is Brand New Calcium Unit, Only bought last week 330 AH
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Kjetil S
Senior Member
2001 BMW 520iat
Posts: 1419
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Re: Battery discharging when Parked
« Reply #8 on: Sep 13th, 2006, 8:04pm » |
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330Ah
Sure you don't mean 330CCA?
I recently put in a 80A battery rated for 700 (not CCA, which according to the seller is an american standard, but the european/norwegian/whatever version of it which should according to him be some 30% stricter. Don't know if he was talking cow crap or not, but it was a good battery)
If it is 330CCA, then I would guess it's a bit on the low side. My previous battery was 60Ah/500CCA, and that had trouble starting the car from time to time.
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KronosKeylock
Newbie
Why do you need a 3 litre?
Posts: 35
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Re: Battery discharging when Parked
« Reply #9 on: Sep 14th, 2006, 7:06pm » |
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I am now drying out the fuse box with me old mums hairdryer, I need a priest not a mechanic
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KronosKeylock
Newbie
Why do you need a 3 litre?
Posts: 35
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Re: Battery discharging when Parked
« Reply #10 on: Sep 23rd, 2006, 7:14pm » |
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Oh No, My headlights and indicators dont work now, where can I get a wiring diagram from, to pass to my mechanic?
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TiberiuS
Senior Member
Ex. 1996 2.3 Ultima - RIP P789 KHJ
Posts: 2257
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Re: Battery discharging when Parked
« Reply #12 on: Sep 23rd, 2006, 7:25pm » |
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Before you let the garage touch it, check the multiplugs going to the fusebox, if the box got very wet though, it might need a rebuild...
There is a thread here with a similar problem to what you have, it may help you.
Hope this helps, Bruce.
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Bruce - '07 Jaguar XKR coupe, '95 Jaguar XJ Sport 4.0, '82 Ford Capri 2.0 Ghia, '15 Honda Civic (sloooooww..)
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Paul_Boulden
Full Member
Bald Eagle
Posts: 134
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Re: Battery discharging when Parked
« Reply #13 on: Sep 23rd, 2006, 7:28pm » |
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Have you disconnected the large black plug in front of the drivers side fuse box ?
Your symptoms are typical of this plug not being replaced properly. It can seem to be fitted properly but not making full contact.
Worth a look
Paul
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KronosKeylock
Newbie
Why do you need a 3 litre?
Posts: 35
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Re: Battery discharging when Parked
« Reply #14 on: Sep 24th, 2006, 6:43pm » |
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Paul, your a diamond;
Did as you suggested and lights and indicators are working again now, I still have a short somewhere and am loathe to investigate more in case I make things worse.
In my attempts to fix the problem I have made an Auxillary fuse box cover out of an old 2litre plastic lemonade bottle, this fits quite snugly over the fuse box on the passenger side
You guys are tops
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Kjetil S
Senior Member
2001 BMW 520iat
Posts: 1419
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Re: Battery discharging when Parked
« Reply #15 on: Sep 24th, 2006, 8:19pm » |
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If it's a saloon you should perhaps check if the light in the boot goes out. I believe someone recently had a similar battery drain problem and it was found to be the boot light.
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