Question about 2000 Mitsubishi Montero Sport

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Electrical The batery Charging system is not workng and it drains the batery

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Sounds like you need a new alternator. If you know how to take your alternator out (consult a chilton's), take it to autozone or a similar parts store and they usually have an alternator tester. If it is bad, buy one from them and get some money back for the core. If you can avoid taking it to the shop, do it, because they will way overcharge you and the alternator is easy to replace. Usually it is just a couple of cables, and a tensioner that you can loosen to take the belt off so that you can remove it.

Posted on Jul 21, 2008

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Hi,

These two faults (no charge & battery drain) indicates a fault with the alternator specifically either the voltage regulator or any of the diodes. Though it is possible to repair them individually, it is more to your advantage to replace the whole alternator.

Pls be reminded though that the battery + terminal is directly connected to the alternator's output and therefore safety precautions preclude that the battery terminal be removed. However, doing so could and would reset the car's computer. Additionally, most car stereos would require a security code in the event battery terminal is removed.

Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.

Good luck and kind regards.

Thank you for using FixYa.

Posted on Jul 21, 2008

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Batery wont charge when u jump,, new battery 5 months ago


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ok sounds like you have a dead battery
1) if turns but slowly:

posible causes:
1.1) old dead batery/
or underchaged battery >check altenator in this case

did you leave your headlights turnt on and drained the battery of its charge?if so get a jump start and then run the car for 30-45 mins to rechagre the battery

if you have at your disposal anothere batery that you know has a good charge
try starting your car with that batery(not using jumper cables) hook it up!
if the slugish turn over is still there

1.2) check your wire conections for corision this means completly disconecting 1 lead at a time (only on one end of that lead)and cleaning them with a wire brush or some sand paper.
(on the battery and the starter also the ground strap conection to the frame.)

2) WONT TURN OVER AT ALL:
posible causes:
2.0) dead battery >try charging it>get a jump start
2.1) blown turnkey igntion fuse
2.2) blow fuse for main har nes wires
2.3) bad starter
2.4) corosion on wire conection (most often the batery terminals)
2.5) starter replaced and hooked up incorectly.

2.6) alram system preventing the turnkey igntion system from getting power

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Not enough information. When was the alternator changed and was the battery fully charged before trying to start after installing new alternator. If not the alternator could have burnt up. Have electrical system checked free at Advance Auto.

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