RE: Please HELP, getting no charge from the alt to the battery
1. With the engie off and the key off, a fully charged battery should be at 12.6 volts when read with a digital volt meter.
2. With the engine running the battery voltage should read at least 14.1 to 14.7 volts when read by the digital volt meter.
3. Voltage/ State of Charge
12.60/ 100%
12.40/ 75%
12.20/ 50%
12.00/ 25%
4. Perform a base voltage test. Prior to performing the base voltage test, turn the headlights on for 10 to 15 seconds to remove any surface voltage from the battery.
a. Chech battery voltage with no loads on the battery
b. Record the readings. Fully charged is 12.6 volts
5. No load test:
a. read base voltage
b. start engine and run at 1500 rpm with no electrical load
c. read the voltage, should be in the range of 14.1 to 14.7 volts.
d. If the voltage increase is less than 2.5 volts over the base voltage, perform the following "Load Test"
6. Load Test:
a. Engine running, turn A/C on, blower motor on high, lights on with high beam on.
b. Increase engine speed to approximately 2000 rpm.
c. There should be a minimun voltage increase of 0.5 volts.
7. If the voltage increases by 0.5 volts, the charging system is operating normally. If not, you must perfor the "Generator On-Vehicle Tests" and the "Generator Bench Tests."
8. You will need a special equipment to perform those tests. The easiest thing to do if you not have the special testing ewquipment, is to take the generator/alternator to an Autozone where they can bench test the alternator.