Can a car alternator run over 14 volts?
“if you fitted this alternator to a vehicle with a flat or faulty battery it will perform eratically . most alternators are engineered to charge up to 18volts for short periods of time to replenish low battery voltage or cope with high electrical loads” I am not sure I believe this, is it true?
What should the voltage regulator be for an alternator?
The manual says the regulator should keep it to a max of about 14.5V. I put a brand new and fully charged battery in at the same time the alternator was changed, so I don’t think the battery can be blamed.
What should the voltage be on a Jaguar alternator?
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 15.5v during parts of the charging cycle.
What causes an alternator to put out high?
8V is considered [&overcharging&]. A bad regulator over [&charging&] would most like shoot upwards of [&16&].[&0V&]. State of charge, temperature, age of [&batteries&] all have an effect on the [&charging&] rate. If it’s cold out and you ran the [&batteries&] down some then it will be higher than normal.
What should battery voltage be when alternator is not charging?
The alternator is connected to a set of belts which when loose can cause it not to function as required. To differentiate an alternator problem from the battery, you will need to use a voltmeter to check for voltage. First, turn off the engine and check the battery voltage. A fully charged battery should have a reading of 12.65 volts.
Why is my alternator putting out 17 volts?
Why is my alternator putting out 17 volts? It may be that the regulator is packing up and the alternator is going to max. unregulated output because of a bad battery output voltage (alternator input) connection between the battery and the alternator.
How can I tell if I have an alternator problem?
To differentiate an alternator problem from the battery, you will need to use a voltmeter to check for voltage. First, turn off the engine and check the battery voltage. A fully charged battery should have a reading of 12.65 volts. Next, turn on the engine and recheck the voltage. You should have a reading of 13.5 to 14.5 volts.
Can you drive a car with a faulty alternator?
Faulty diodes can easily be replaced, but you will need to dismantle the alternator. It is impossible to drive the car with a faulty alternator. While it is the work of the battery to power the electrical components in the car, it cannot do this alone.