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Does your new alternator need to have voltage going to from someplace before it will put out any juice?
Wiki User
∙ 18y ago
Most alternators need a voltage present to operate. This is because the voltage is used to create the magnetic field used to generate power. If you are directly replacing another alternator, the wiring should already be correct for it. If you think that your alternator is not receiving power (for its field windings) then you should check for the presence of the voltage with a meter when the ignition switch is on. The proper place to check will depend on the vehicle, and some newer alternators will only apply the voltage when a start signal is recognized. This would make troubleshooting much more difficult.
Wiki User
∙ 18y ago
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Why No voltage going to the alternator?
Voltage flows from the alternator not to it. If it is outputting no voltage it is defective.
Why voltage regulation is required in alternator?
To regulate the voltage flow going to the battery.
What can cause low voltage in a car?
Alternator going out.
What is a regulator on a 50cc motorbike do?
the regulator takes the power produced from the alternator and converts it to the correct voltage before going into the battery.
Why should an alternator never be 0perated open-circuit?
Theory of an alternator. To control the voltage the alternator turns of and on very very fast, this is called pulse width modulation. Wiki it for more background. This means that the voltage spikes very very high for an instant and drops to almost zero before it turn on again. To keep working, and it will try, it burns itself out by going to to high a voltage to often.
How does an alternator ground out?
An alternator will ground out when the normally insulated line that charges the battery( after going through the regulator system) makes contact with the alternator shell. This sends any voltage to the surrounding case and to any surrounding metal thusly grounding the voltage out. This can occur due to vibration or excessive moisture to the casing.
What are the chances of an alternator fuse going bad before the actual alternator on a Ford E-250 van?
good
What is ceiling voltage in exciter?
ceiling voltage is the maximum field voltage that the exciter can withstand before going into unstability
If its not the alternator that's bad what is it i have changed the alternator but the lights and everything are still blinking?
You need to check and make sure the alternator is charging. You could have gotten a defective one or if you got a used one it may be bad. Get a digital multimeter and with the vehicle off check the voltage at the battery. Should be 12+ volts with a charged battery. Start the vehicle and check the voltage again, should be 13-14 volts or better. If no voltage increase check the big output terminal (thick red wire usually going to it) at the alternator and see it the alternator is putting out voltage. If no voltage other than battery voltage then the alternator is not working. This is assuming that the alternator has an internal voltage regulator (most now do). Without year/make/model/engine size it's very hard to give you decent direction other that generic help :-) **I am assuming you have tested the battery**
How do you hook up a ford internal voltage regulator?
To get to an internal voltage regulator first disconnect the battery ground ( negative cable ) then remove the alternator. Make sure you mark the cables on the alternator so you can put them back exactly where they are supposed to go. The voltage regulator is inside the alternator and you will have to take it apart. I'm not sure how the regulator is mounted in your alternator, it might have small studs with nuts on them, or small screws or bolts, or it may be soldered in. In the latter case you will have to cut out the voltage regulator and solder in the new one. If you are going to take out the alternator anyway you should probably take it to a parts store where they will test it for free and tell you if you need a whole new alternator or just the voltage regulator.
Why does your alternator light come on randomly and intermittently?
If an alternator light keeps coming off and on, this may indicate that the voltage output of the vehicle is going up and down intermittently. This may mean the alternator may need to be replaced soon.
What does it mean if 1990 Chrysler Imperial 'improper voltage' light comes on and the gauges all go crazy?
sounds like your alternator or voltage regulator is going out most auto zones can test them for free
