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Author Topic: help with alternator or electrical problem  (Read 901 times)

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harry123

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help with alternator or electrical problem
« on: 10 January 2009, 22:13:12 »
Hi
I have now replaced 3 alternators but the alternator is still showing as not sufficiently charging.

Can somebody point me in the right direction as to what to check
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iainb

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Re: help with alternator or electrical problem
« Reply #1 on: 10 January 2009, 22:16:04 »
Ouch.......Thats got to hurt.
Is the problem that your battery keeps going flat or what.
Please can you give us the full problem
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HGV mechanic

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Re: help with alternator or electrical problem
« Reply #2 on: 10 January 2009, 22:55:10 »
assuming the red battery light is constantly on i would guess there is a open circuit some when ,  :-/
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harry123

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Re: help with alternator or electrical problem
« Reply #3 on: 11 January 2009, 20:32:36 »
luckily i  only had to pay for 1 alternator.

the battery light will only come on very dim when there is alot of power being used i.e full fan or reat windscrren heaters.

i have had the alternator checked out every time i have replaced one and is showing between 12-13 i am told that a normal alternator should be showing 14.

now i am no electrician but sounds like ther is some kind of electrical problem. surely three alternators cannot be duff.

i was hoping someone can point me in the right direction.

  
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Marks DTM Calib

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Re: help with alternator or electrical problem
« Reply #4 on: 11 January 2009, 20:45:58 »
Check the connections to the battery terminals....do any of them get warm?
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unlucky alf

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Re: help with alternator or electrical problem
« Reply #5 on: 11 January 2009, 21:00:45 »
check all connections to battery as DTM says, also check 0v [aka earth or negative] to the engine block, on mine i found wires corroded inside one of the crimps connected to the positive connection on battery, cut back to good & re-crimped,fine now :y
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