Why does an alternator need to be charged?
Even if you had a new car battery and were lucky enough to turn the engine over, it would probably run for about 10 minutes before the power cuts out. The alternator is necessary to keep the battery recharged and to alternate the electrical current throughout the many components of your vehicle to keep them powered.
Is the alternator still running off the battery?
Now i hooked up the voltage tester to the battery with the new alternator and the car still seems to be running off just the battery (at about 12 volts).
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.
What happens when the belt on an alternator breaks?
A closer observation of the alternator will reveal a pulley and belt system that works to convert mechanical energy into electrical energy. The serpentine belt powers the alternator, and if it fails, the alternator will stop working the moment your belt wears out and breaks, or the pulley becomes damaged.
Where can I buy a new Honda alternator?
The alternator that I bought was new from Honda and not re-manufactured (the cost was just over $470.00), the part number is 31100-5A2-A02 (Made in Japan). Here is a side picture and install picture: I asked AutoZone to test my old alternator stand alone, but they said their machine says that they cannot test it this way.
What happens when you replace the alternator in a car?
My details are:- Everything is good from a cold start ~ 14.2 volts at the battery from the alternator, but after a few miles, the charging voltage falls lower and lower until the battery ceases to charge. I replaced the alternator but it did not make any difference.
How to troubleshoot an alternator and charging system problem?
If necessary, adjust the belt with the help of your car owner’s manual or repair manual. Inspect the belt for signs of cracks, cuts, shiny spots, deterioration or other signs of wear or damage. Change the belt and belt tensioner at the manufacturer’s recommended interval. 2. Check for Wiring Problems
Why does my alternator get higher than base voltage?
You should get 0.5 to 2 volts higher than base voltage. If you are getting more than 2 volts above base voltage, most likely your alternator is over-charging the battery or the battery is faulty. Other potential problems are a faulty voltage regulator or a problem in the charging system wiring.