displaying posts 1 to 17 of 17

Author Subject: Major battery drain
sparko

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Registered: 31 May 2011

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Post #1
something's draining my battery. short circuit maybe? any good fault finding tips? pull fuses one by one until the amps drop? Confused

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Posted 11th Jun 2011 at 02:32
sparko

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Post #2
forgot someone already gave me a good answer Happy

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Posted 11th Jun 2011 at 02:42
mwl001

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Location: Bolton

Registered: 24 Jul 2005

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Post #3
That would be a good start.
Are you sure the battery isn't just knackered?
Posted 11th Jun 2011 at 02:44
sparko

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Post #4
bought a new one. dead already. must be a heavy drain. would a bad earth affect it?
gonna be tomorrows project... headache

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Posted 11th Jun 2011 at 02:48
owain

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Location: Essex

Registered: 20 May 2009

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Post #5
Is it definitely flat? I thought mine was (even having replaced it), turned out it was just a bad connection on the terminal, which was giving the same symptoms as a flat battery.

Have you actually put an ammeter in-line when it's not running?

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Posted 11th Jun 2011 at 15:11
sparko

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Post #6
gonna do that today. literally pullin on the boiler suit. the terminals need replacing too tho.they were tight as i could get them tho. something aint right. dont mind isolating little circuits. just hope its not the 30A lights one

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Posted 11th Jun 2011 at 15:16
owain

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Post #7
Don't just check the terminals, mine were tight too - mine was the connection where the starter motor connected to the terminal.

Just check for anything loose first, it'll save you a whole lot of time if it's something as simple as mine was Yes

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Posted 11th Jun 2011 at 15:22
sparko

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Post #8
is it easy to get too? never even crossed my mind.

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Posted 11th Jun 2011 at 15:29
smegal

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Location: Leeds

Registered: 26 Dec 2005

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Post #9
Have a quick look here

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Posted 11th Jun 2011 at 20:25
dan_s16

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Location: Cheltenham

Registered: 22 Jan 2005

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Post #10
Has it still got the standard alarm system on it?

If it has I would check the alarm system first as when the batteries die in the siren it can cause problems. I think it's fuse 6 (should be a 5Amp fuse IIRC, pull that out and check if the load has gone. If it has, unplug the siren (do a search if you don't know how it's been covered many times before) then put fuse 6 back and check if the drain on the battery has gone.

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Posted 11th Jun 2011 at 20:33
sparko

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Post #11
had every fuse out an its still sparkin on the terminal.... c*nt. excuse the language but seriously startin to loose the rag. scottish mentality

any help? put an ampmeter across the live and battery but its reading nothin. startin to think the car's laughin at me

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Cherry Red - Phase 1 Restoration

She's alive again Smile
Posted 11th Jun 2011 at 20:34
sparko

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Registered: 31 May 2011

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Post #12
quote:
Have a quick look here[/url]


thats seriously helpfull. if that works i owe u big Cheers

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Cherry Red - Phase 1 Restoration

She's alive again Smile
Posted 11th Jun 2011 at 20:38
sparko

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Registered: 31 May 2011

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Post #13
any idea why when i measure the load i get the usual 20-25mA but when i run the car for a wee while (check the altenator's workin) when i cut the engine an measure it again i get a spike of 4-6A for a brief sec?Huh?

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Cherry Red - Phase 1 Restoration

She's alive again Smile
Posted 12th Jun 2011 at 19:20
bobdylan_55

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Location: derby

Registered: 28 Mar 2009

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Post #14
put a bulb between the negative lead terminal and neg battery terminal (to complete the circuit) and then pull out the fuses one by one until the bulb goes out. then you can find which circuit the short is on.

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309 GTi6-T
Posted 12th Jun 2011 at 20:11
sparko

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Post #15
hahahahahaha sorted the bugger. happy days. cheers lads Big grin

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Cherry Red - Phase 1 Restoration

She's alive again Smile
Posted 13th Jun 2011 at 01:42
owain

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Location: Essex

Registered: 20 May 2009

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Post #16
And the problem was.....?

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Posted 13th Jun 2011 at 02:01
sparko

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Registered: 31 May 2011

Posts: 122

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Post #17
bad earth and shit neutral connection i think. alternator wasnt workin properly too when i tested it. tightened an cleaned all connections and changed the neutral clamp. now sittin at a comfortable 20mA an alternator reads 14.4.

one problem down, more to go. salvaged it from a mate who left it sittin. currently bringin it back to its former glory. gotta replace the heatin matrix without a garage.... oh the joys of a city

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Cherry Red - Phase 1 Restoration

She's alive again Smile
Posted 13th Jun 2011 at 02:10

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