The Charging System

http://Mercedes-Benz.autoboardz.com/Frustrating-charging-system-issue-2000-GC-ftopict206978.html (Frustrating charging system issue, 2000 GC)
It's a 2000 Grand Caravan 3.3L, high mileage. The charging system seems to be failing intermittently but increasingly. Things will be fine for several days then I'll get a battery light (low voltage) and then the car will die as the voltage continues to drop. Replaced battery and checked the entir..
« Not sure if it pertains to yours. Some of them the voltage reg is part of the body control computer So I would be checking the computer grounds »
« First of all toss the Haynes manual in the trash can, its wortheless. The BCM does not in any way have control of the generator. When you say the voltage dropped down 11.5 5 did you measure this at .. »
« oooops one more thing , the relay you are referring to is the ASD relay. make sure that when the engine is running you have 12 volts at the DG/OR wire at the generator connector also. If the generat.. »
« Glenn, thanks very much for your response here. At the battery; not sure how to check it at the alternator. No check engine lights or fault codes, just the battery symbol light and corresponding vol.. »

http://Mercedes-Benz.autoboardz.com/98-Sonata-charging-problems-ftopict207268.html (98 Sonata charging problems)
about an hours worth of driving, the charging system fails, I replaced the battery as per Sears diagnostics recommeded that ) batter was dead. (battery was still under warrnty, so it was a free replacement)
« (battery So, what are you saying? Are you saying you still have a problem after replacing the battery, or are you just letting everyone know that the Sears diagnostic pinpointed your problem? If y.. »
« darn news thing sent the message before i was done,sorry.. relisted it . Hello, About an hours worth of driving, the charging system fails, I replaced the battery as per Sears diagnostics recommende.. »
« Sometimes the alternators work when cold and then fail to work when hot. The voltage regulator is part of the alternator. I suspect replacing the alternator will repair your issue. »

http://Mercedes-Benz.autoboardz.com/Help-98-Sonata-charging-problems-ftopict207277.html (Help with 98 Sonata charging problems)
Hello, About an hours worth of driving, the charging system fails, I replaced the battery as per Sears diagnostics recommended that the batter was dead. (battery was still under warranty, so it was a free replacement) they indicated the alternator was working just fine......... Next day, the same ..
« again...... A couple of things come to mind Dave. With a car that old, grounds and connections always become areas of suspicion. Clean, tight, and solid mechanically at the connector. It's even p.. »
« I would assume since after you replaced your battery that the problem would be the alternator. I had my sister's 99 Elantra alternator which began failing at 70k miles. The problem with the Hyundai .. »

http://Mercedes-Benz.autoboardz.com/1986-Nissan-Charging-System-ftopict207408.html (1986 Nissan Charging System)
I have a 1996 Nissan 4x4 D21 Pickup and the charging system has suddenly quit working. It 'appears' that it has a separate voltage regulator from the alternator (and the alternator's a bear to get at from the top). Can anyone give me any pointers in identifying which one is causing the problem b..
« As old as it is I might guess that the brushes have finally worn down. You can check the alternators output. If it has some then the regulator will be at fault. -SP wrote: »

http://Mercedes-Benz.autoboardz.com/96-Nissan-Truck-Alternator-Charging-System-Problems-ftopict248678.html (96 Nissan Truck Alternator/Charging System Problems)
I have a 1996 Nissan XE truck. The charging system is driving me crazy. I have replaced the alternator 3 times (Advance Auto Parts) and the battery twice! He are my symptoms. The battery will eventually discharge over a few weeks. When I recharge the battery, it appears the alternator is ..
« It would seem there is a significant current draw. The best way to find it is to put an ammeter in series with the ground wire off the battery to determine the total current flow when the engine is.. »
« Al, Thanks for your input. I need to get a ammeter to check that. But it seems stranger than a small current draw. I can monitor the alternator voltage, and sometimes (not always) I see the vol.. »