4
votes
Should an alternator ever run over 14.5V?
I won't say a good alternator will "never" charge at 16.5vdc, but keeping it there for any length of time will boil the battery very quickly. Your line of thinking is correct in that a good alternator ...
- 160k
3
votes
Accepted
Can i modify my motorcycle voltage regulator cooling fins?
One would expect that the fins are currently aligned with the airflow. Cutting holes or grooves perpendicular to the fins is not likely to improve the cooling by a large factor. Some turbulence can be ...
- 4,915
3
votes
Accepted
Removing a Voltage Regulator after exchanging a dynamo for an alternator
No.
You need to connect the wire on terminal 30 to the wire on terminal 51, that is assuming you have not replaced the wire to the generator. If you have then you need to connect the alternator to ...
- 34.7k
2
votes
Accepted
Battery Voltage low when car is running. Should I be concerned?
I wouldn't worry too much. You can go a little deeper in checking the system. But you will need a load tester. I wouldn't worry about 0.4v. You could turn on as many loads ad you can.
Head lights/...
- 833
2
votes
Should an alternator ever run over 14.5V?
While the answer by Paulster2 is good, I have something to add. It matters where the voltage is measured! If you measure the voltage close to the alternator, it can be greater than when measured in ...
- 15k
2
votes
Should an alternator ever run over 14.5V?
It depends on the car and the age. You don't specify make and model, but on Jaguars the charge control is matched to the "newer" type of battery which is calcium based and the voltage can be higher 15....
- 34.7k
2
votes
Accepted
1990 F-150 Eating Alternators
I would check the grounding straps, engine to body, engine to battery or body to battery.
On some vehicles they are fitted across the gearbox mount - shorter so cheaper...
- 34.7k
2
votes
How can I confirm a faulty alternator or regulator with only a basic digital multimeter at hand?
This sounds like a poor or loose connection or a broken cable somewhere.
You need to check, inspect and test each cable and connection between the battery and the alternator - including all the ...
- 34.7k
1
vote
Accepted
Alternator / Regulator / Battery issue with Yamaha XJ 600
From my own research, the tests reported in the question do point at the regulator.
I ordered a second-hand regulator with the same reference (SH640D-12) and since the replacement the voltage does ...
- 201
1
vote
Schematic for Ford IASF Regulator
Here is the 4 pin diagram, it has never changed over the years for external regulators.
A= Battery, to alt and battery.
I= Charging indicator on instrument cluster
F= Field (alt)
S= Stator (Alt)
- 7,990
1
vote
Accepted
How to minimize voltage loss
Short answer:
1. Yes
2. All
But really, your bikes magneto should be able to keep your battery charged while you're riding without increasing wire size and changing the bulbs. I would clean up the ...
- 26
1
vote
Can i modify my motorcycle voltage regulator cooling fins?
Removing mass from the cooling fins will actually hurt the cooling ability of the cooling fins. There are three ways (I can think of) to help with the cooling of the fins:
Increase the area and/or ...
- 160k
1
vote
Charging problem
So a “new original” alternator - 6v or 12v..
You put a 12v ignition system so the battery needs to be 12v and so does the alternator and the regulator.
If those things are mis- matched then they won’...
- 34.7k
1
vote
How much accurate car cigarette lighter port is?
13.5 V is a bit low even at battery terminals. If you have a two-wire alternator, it is much, much too low at the alternator output terminal. You said your alternator has a separate signal wire. If ...
- 15k
1
vote
Accepted
What is BM voltage?
https://en.wikipedia.org/wiki/CAN_bus#CAN_bus_monitor Control Area Network Bus (CanBus) is the data network protocol on modern cars that controls engine, transmission and other vehicle functions.
+BM ...
- 141
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