Is there a problem with my alternator Charger?
If the temperature was near ZERO and you made the test soon after starting the engine there is/was no problem. Check the charging voltage after driving several miles. It has been between 50 and 60 degrees here for the last week. The car has an option in the message center that shows battery voltage.
When is 15 volts too high for an alternator?
Is 15 volts too high for alternator? Higher than 15 volts indicates a fault in the charging system’s voltage regulator or related circuits. If it’s substantially excessive, this can cause electrical system and/or battery damage. You mentioned your voltmeter runs at about 15 volts most of the time.
What’s the overcharge rate on an alternator?
The internal regulator mounts inside the alternator case (consolidated), with a smaller and more compact design. If one of the contact switches has stuck, it can produce an overcharge rate, typically 15 volts or more.
Is the alternator on my Buick overcharging?
I have a 2006 Buick LaCrosse with the 3.8 L motor. Last week I found out that the alternator was overcharging (charging at around 15.5-15.7 volts.) The car has 72000 miles on it.
If the temperature was near ZERO and you made the test soon after starting the engine there is/was no problem. Check the charging voltage after driving several miles. It has been between 50 and 60 degrees here for the last week. The car has an option in the message center that shows battery voltage.
Is 15 volts too high for alternator? Higher than 15 volts indicates a fault in the charging system’s voltage regulator or related circuits. If it’s substantially excessive, this can cause electrical system and/or battery damage. You mentioned your voltmeter runs at about 15 volts most of the time.
What causes an alternator to overcharge on a stock car?
When the wrong alternator has been installed in a stock vehicle or if the pulley has undersized dimensions (causing extra alternator rotation), the charging supply will be higher than the demand and cause an overcharged state. High performance or racing alternators should not be installed on stock passenger vehicles.
What happens if the charger voltage is too high?
Denial isn’t. Charging voltage is too high means that the regulator is bad: It’s less common, but you may see that the charging voltage is too high, like over 15 volts. This means that the voltage regulator is stuck in the closed position. Overcharging can generate hydrogen sulfide gas and cause the battery to explode.