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Topic: battery drain problem (Read 1610 times) |
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geordie_boy1978
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battery drain problem
« on: Nov 29th, 2006, 6:54pm » |
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hi all this is my first post and it's not a good one ....
i've owned my scorpio for 4months and untill now it's been pretty trouble free..
Problem started while i was driving i noticed the ABS light came on i stopped at a friends and it was parked up for ten mins and when i tried to start there wasn't enough power to start it . luckily i was on a hill and i just let it roll and then lifted the clutch. 
got it home and went straight to see a friend at kwik fit and he said the battery was gone.. and that the alt was charging at an acceptable rate ..
bought a new battery from halfords and fitted it ..
Thought great problem solved 
Went home had a shower and came out to go to tesco's and the shinny new battery was dead .... and a mean dead  was only in the house for twenty mins ..
phoned a friend and he came round we jump started it and then tested the alt again . was giving a reading of 6.4v .. so the day after fitted a new alt (READING 13.3V AND 14.4V WHEN YOU REV IT UP ) and another new battery because it had acctually broke it ....
drove fine for an hour untill some lights started to come on on the dash turned it of and then it wouldn't satrt again...
And thats when i found this site ..
I know your all sat there reading this thinking your FUSEBOX has got full of water ... because thats what i thought and you are dead right ... stripped both fuse box's the one by the battery has had it, so i bought a new one
the other box was full of water so we stripped it down cleaning and drying it and fitted it all back in .
started up fine and then started burning out wire's in the loom that leads from the fusebox down the wing to the front of the car . stripped the loom down and it was the earth that was causing the problem . cut it all out and spliced in a new earth . took all the relays out the fusebox and checked them . one of them was well and truely broke .. 4 pins on the relay live / earth / switch live and switch'd live out
turns out instead of switching the power to the switch'd live OUT it was sending it down the earth causing the melting earth wires..
any way fitted new relays and tidy'd everything up and took it for a drive was fine for an hour until i went to halfords to get a bulb ..
came out fitted a new bulb and now it won't start because the battery is completely flat again....
I RELLY NEED HELP NOW BECAUSE I DON'T KNOW WHERE TO LOOK NEXT IT'S A 2.5TD SCORPIO WITH 95K ON THE CLOCK ......... ANY HELP WOULD BE GRATEFULLY APPRECIATED
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TiberiuS
Senior Member
Ex. 1996 2.3 Ultima - RIP P789 KHJ
Posts: 2257
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Re: battery drain problem
« Reply #1 on: Nov 29th, 2006, 7:54pm » |
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Hello mate and welcome aboard 
You seem to know a thing or two about auto electrics to have gone as far as you have with it.
You need to start looking for a current drain, with the ignition off pull each fuse in turn and insert an ammeter into the sockets, if you get anything over a fraction of an amp the circuit has a short somewhere. It's unlikely to be a hard fault as you're getting no blown fuses, perhaps a bad switch or module.
Favourites to check for current drain are the tailgate and glovebox lamps, also mabye a silly question but are all the headlamps off?
Hope this helps some.
Regards, 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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hellblue
Full Member
Ill have silver,it dries just as fast !
Posts: 210
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Re: battery drain problem
« Reply #2 on: Nov 29th, 2006, 9:17pm » |
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If the battery goes flat that qwick it must be a big drain! I would check the feed to the glow plugs to start with,if these are on all the time thats a good 60 amps with no blown fuses to show for it ! & if the dash indicators off the may still have power ! heated seats/windows ect all should be off (ign off) but wireing fault/relay may keep something live double check your wireing after fuse box work!
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Gary
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harry.m1byt
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Re: battery drain problem
« Reply #3 on: Nov 29th, 2006, 9:38pm » |
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If you lack the means to actually measure the level of the discharge, have you considered wiring a lamp up between one of the battery terminals and the cables which normally bolt onto it (in series). With everything turned off, doors shut etc. it should only draw a few milliamps - not enough to light even a small wattage lamp if everything is normal.
If it lights up (and you are sure everything is off), then you have the means to to easily trace which circuit is causing the discharge - just pull the fuses one at a time until the lamp goes out.
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geordie_boy1978
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I'm a YaBB newbie!
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Re: battery drain problem
« Reply #4 on: Nov 29th, 2006, 9:56pm » |
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we've done a parasetic ( <- think thats how ya spell it ) load test accross the battery terminals and the ammeter shows up to 10amps . it went of the scale . .
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geordie_boy1978
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I'm a YaBB newbie!
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Re: battery drain problem
« Reply #6 on: Nov 29th, 2006, 11:03pm » |
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yes
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Kjetil S
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2001 BMW 520iat
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Re: battery drain problem
« Reply #7 on: Nov 29th, 2006, 11:12pm » |
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Okay, just me misunderstanding your post then
Only one thing to do. Start pulling fuses until it drops.
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