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Charging problems - Beetle Volkswagen Cars & Trucks

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Have you have the alternator and battery checked to make sure both are working right?

Posted on Nov 04, 2008

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1996 Aurora with intermittent charging issues. New alternator and battery.


Are you aware that this charging system is computer controlled ? There is also a temp sensor for the battery > Battery Thermistor
In addition to the voltage regulator the charging system also utilizes a battery thermistor, which measures battery temperature, in order to control system voltage. A procedure for replacement of the battery thermistor can be found in this section.

Oct 20, 2016 | Cars & Trucks

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What could be the possible problem? I have an 1996 Oldsmobile Aurora which I just replaced the alternator. See details.


was it a new alternator ?..it will have a warranty

the alternator has a stator and internal regulator and brushes

plug or pins into alternator corroded or bent
battery not taking charge ..bad cell
loose terminals
poor earth contact on battery
parasiticdraw ...starter motor ...ignition switch

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Oct 20, 2016 | Oldsmobile Cars & Trucks

2 Answers

My battery light has been coming on and off for a couple of weeks now and saying "Service Battery Charging System".


Have your charging system tested. The battery light is turned on when there is a charging system problem causing an over/under charge condition. You may possibly have an alternator problem. If the battery is not being charged properly, the computer will start shutting down electrical components for protection and to keep enough voltage supply to enable the vehicle to continue running

Jan 27, 2016 | Cars & Trucks

1 Answer

2002 cadillac Deville won't stay charged what could he problem be. New battery and still won't hold a charge


It could be a bad alternator not keeping the battery charged. You need to check the starting and charging systems with diagnostic meters to find the problem.

Sep 30, 2014 | Cadillac DeVille Cars & Trucks

1 Answer

Alternator wont charge after replacement , pontiac fiero


The burnt out bulb may be the problem. At least up to '87 the bulb for the alternator light was part of the charging circuit and was used to provide the resistance to excite the alternator to charge. In '88 GM started using the CS alternator, which might be self-exciting.

Apr 22, 2012 | Pontiac Fiero Cars & Trucks

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Interior lights on but car wont start


STARTING YOUR DIAGNOSIS
What happens when you attempt to start the engine? If nothing happens when you turn the key,"http://www.aa1car.com/library/2003/us20310.htm"to determine its state of charge. Many starters won't do a thing unless there is at least 10 volts available from the battery. A low battery does not necessarily mean the battery is the problem, though. The battery may have been run down by prolonged cranking while trying to start the engine. Or, the battery's low state of charge may be the result of a charging system problem. Either way, the battery needs to be recharged and tested.
If the battery is low, the next logical step might be to try starting the engine with another battery or a charger. If the engine cranks normally and roars to life, you can assume the problem was a dead battery, or a charging problem that allowed the battery to run down. If the battery accepts a charge and tests okay, checking the output of the charging system should help you identify any problems there.
A "http://www.aa1car.com/library/2002/cm10220.htm" that is working properly should produce a charging voltage of somewhere around 14 volts at idle with the lights and accessories off. When the engine is first started, the charging voltage should rise quickly to about two volts above base battery voltage, then taper off, leveling out at the specified voltage. The exact charging voltage will vary according to the battery's state of charge, the load on the electrical system, and temperature. The lower the temperature, the higher the charging voltage. The higher the temperature, the lower the charging voltage. The charging range for a typical alternator might be 13.9 to 14.4 volts at 80 degrees F, but increase to 14.9 to 15.8 volts at subzero temperatures.
If the charging system is not putting out the required voltage, is it the alternator or the regulator? Full fielding the alternator to bypass the regulator should tell you if it is working correctly. Or, take the alternator to a parts store and have it bench tested. If the charging voltage goes up when the regulator is bypassed, the problem is the regulator (or the engine computer in the case of computer-regulated systems). If there is no change in output voltage, the alternator is the culprit.
Many times one or more diodes in the alternator rectifier assembly will have failed, causing a drop in the unit's output. The alternator will still produce current, but not enough to keep the battery fully charged. This type of failure will show up on an oscilloscope as one or more missing humps in the alternator waveform. Most charging system analyzers can detect this type of problem.
thanks,please rate the solution positively.

Nov 06, 2009 | 1985 Buick Century

2 Answers

Charge light stays on battery and alternater are good


If the red charging light is on, it generally means one of two things: either your alternator is not charging or your battery is too weak and is not charging properly. It also could be a wiring problem in the charging system. The method of testing the charging system is to use an inexpensive alternator tester that clips over the battery cable and indicates positive current. Some of the major auto parts stores have testers available for free loan and may help you with it if you desire to try to fix it yourself. The problem is that the alternator is expensive, so you will want to be sure what the exact problem is before spending money. Inexpensive current/charging testers are available to determine if your alternator's output is sufficient. This should be your first thing to do, which is to determine where the problem is and if its not the alternator, its probably a wiring problem and/or poor battery or corroded battery terminals. It's also possible that your system is charging but there is a current drain somewhere. An in-line current tester connected to the battery will determine if that is the case.

Oct 03, 2009 | 1991 Ford Festiva

1 Answer

Battery replaced - won't hold a charge. Is the alternator the problem?


THE BATTERY IS ONLY FOR STAR THE CAR. WEND THE THE CAR IS RUNIG ALTENATOR IS CHARGING THE BATTERY FOR NEX TIME YOU NEED TO STAR THE CAR . CHECK CHARGE ON THE ALTENATOR . IF ALTENOTOR NO CHARGING REPLACE.

Apr 17, 2009 | Mazda 626 Cars & Trucks

1 Answer

Short


Tour problem is in the voltage regulator inside the alt.
Replace the alt.

Oct 24, 2008 | 1993 Jeep Grand Cherokee

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