Vehicle & Technical > Discovery
New battery, alt, belts, still no charge.HELP!
Wanderer:
You'll know Tim.
Is it the 300 tdi that has a directional belt or do I need to take more water with it :)
jira:
Charge warning lamp is fine, belt routed correctly, every connection and eatrth checked and re-checked.
Noticed that overnight the battery is discharging and the alternator is warm. That indicates an internal short in the alternator. However, we have been through at least 4 or 5 - I am losing count - alternators including the original. All displaying the same symptoms but sometimes it takes a few months to show up, other times it takes a few hours.
Is it possible something is cooking the alternators causing an internal short? I hate to do it, but this is the last shot before we get rid of this vehicle. :cry:
jira:
BTW, a quick check of another forum suggests this is not an uncommon problem, but no one seems to have found a definitive answer. A lot of those with my symptoms have replaced the alternator several times, but there is no indication of real resolution.
Thanks again,
John
petergalileo:
After 1993 the alternator output runs through a fuse, so why not remove the fuse overnight and see if that stops the alternator getting warm and the battery discharging ?
If that works, I suppose you could fit some sort of relay system so the alternator is only connected with the ignition on ?
Just an idea.
jira:
I think the alternators are fine when we install them, but something is causing them to fail, perhaps something to do with the diodes being a slightly different spec in the aftermarket unit. Or maybe something to do with the pahse or quality of the signal. Just not sure.
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