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Topic: Battery warning light (Read 706 times) |
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hopper
Junior Member
GRIMREAPER
Posts: 78
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Battery warning light
« on: Dec 24th, 2008, 9:02pm » |
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Hi Again,
The battery warning light comes on intermittently, I've used the diagnostic test from the dashboard and notice the alternator is charging at 13.6-13.8volts when driving but when the heated screens are switched on the voltage drops to 12.1-12.2volts. I presume it is the alternator that needs replacing as no matter what is switched on the car should register over 14.4v at all times.
Regards Chris
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Scorpio 24v Cosworth Estate 1995 M reg
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pinto
Full Member
TD04 on a galaxy manifold ? whooooooosh !
Posts: 474
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Re: Battery warning light
« Reply #1 on: Dec 25th, 2008, 3:03pm » |
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Sounds like the alternator is not long for this world, but theres a possibilty that it could just be a failing rectifier pack (the little black box on the plug end)
These used to be fairly easily available from LSUK, but since they went bust, electrical suppliers are harder and harder to find - probably best off sourcing a s/h alternator from a scrappy or parts wanted on this forum
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hopper
Junior Member
GRIMREAPER
Posts: 78
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Re: Battery warning light
« Reply #2 on: Dec 25th, 2008, 6:44pm » |
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Hi Pinto,
I've sourced a recently reconditioned alternator only 3 months since recon £40 instead of £87 full price. Once received and fitted i'll confirm if this rectified the fault.
Regards Chris
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Scorpio 24v Cosworth Estate 1995 M reg
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matt1987
Full Member
I'm a YaBB newbie!
Posts: 101
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Re: Battery warning light
« Reply #3 on: Dec 26th, 2008, 12:27am » |
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the battery light comes on due to a incorrect charge or malfunctioning part, the part in question is the diode pack , a diode pack only allows a dc charge to exit and no charge can go back through. it is a one way system. this will bring the light on indicating a fault to the driver like a engine management light. 
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Highlander
Moderator
Expert
13 Scorpios, XR4x4, Suzuki SJ413 for off road :)
Posts: 8244
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Re: Battery warning light
« Reply #4 on: Dec 26th, 2008, 12:39am » |
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on Dec 24th, 2008, 9:02pm, hopper wrote:| no matter what is switched on the car should register over 14.4v at all times. |
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my 24v's sit around 13.6 to 13.9, i only get 14 if i rev it hard
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on Oct 17th, 2011, 12:35pm, Simmo wrote:I give up !  Too much for an old boy!  |
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hopper
Junior Member
GRIMREAPER
Posts: 78
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Re: Battery warning light
« Reply #5 on: Dec 26th, 2008, 6:58am » |
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Hi Highlander,
What does your battery indicator read in diagnostic mode when you have your heated front and rear screens on please?
Regards Chris
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Scorpio 24v Cosworth Estate 1995 M reg
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hopper
Junior Member
GRIMREAPER
Posts: 78
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Re: Battery warning light
« Reply #6 on: Dec 26th, 2008, 7:01am » |
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Hi Matt1987,
Where is this diode pack situated on a 24v
Regards Chris
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Scorpio 24v Cosworth Estate 1995 M reg
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Snoopy
Administrator
Very old.BAD tempered and missing friends.
Posts: 6278
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Re: Battery warning light
« Reply #7 on: Dec 26th, 2008, 8:19am » |
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In the back of the alternator Its the rectifier part of the alternator. It will be found.!
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hopper
Junior Member
GRIMREAPER
Posts: 78
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Re: Battery warning light
« Reply #8 on: Dec 26th, 2008, 10:34am » |
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Hi Snoopy,
Thanks for the info I'll have a look at this tomorrow and post the results
Regards Chris
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Scorpio 24v Cosworth Estate 1995 M reg
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matt1987
Full Member
I'm a YaBB newbie!
Posts: 101
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Re: Battery warning light
« Reply #9 on: Dec 26th, 2008, 11:18pm » |
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got it in one snoopy
when the battery light comes on it seems to be at fault with the alternator best bet and cheapest is to get another one. rather than messing about with them u can get repair kits seen them on ebay but it just aint worth it unless you can strip it down pretty quick and rebuild it with all the parts. with my experiences at work it is best to replace rather than repair.
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Highlander
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13 Scorpios, XR4x4, Suzuki SJ413 for off road :)
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Re: Battery warning light
« Reply #10 on: Dec 28th, 2008, 12:33am » |
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on Dec 26th, 2008, 6:58am, hopper wrote:Hi Highlander,
What does your battery indicator read in diagnostic mode when you have your heated front and rear screens on please?
Regards Chris |
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Much the same on full load, drops slightly to 13.4/13.6
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on Oct 17th, 2011, 12:35pm, Simmo wrote:| I give up ! Too much for an old boy! |
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