1991 Park Avenue: new battiery will not hold charge...
Check the following to see if your cars electrical system is causing a power drain.
*Make sure all headlights and interior lights, and accessories are off when vehicle is not in use.
*Have your alternator professionally tested to make sure the built in power regulator is not going bad. Also check that the alternator is putting out a proper charge during vehicle operation. (Use a digital multimeter, touch the test leads to the battery terminals while the car is running RED to positive+ and BLACK to negative-, being careful you don't cross the two and never let positive and negative touch. Multimeter should read 14 volts DC with the car running. If it reads under 14 volts, replace the alternator.
*Check for a bad grounding wire (usually the negative battery cable), if it's cracked, frayed, or bare wire is exposed replace it right away. It can drain the battery if the bare wire touches the metal of the vehicle.
* If your car is equipped with the twilight sentinel (automatic headlight feature) shut it off manually when your done using your car for the day. If the twilight sentinel is going bad, it can draw battery power even if the headlights are off.
*Have a test performed to make sure you don't have a faulty ignition switch. This can draw power even with the ignition key off.
*If all of the above test good, you likely have defective battery. Replace battery. Feel free to contact me if problems persist.
May 16, 2010 |
1991 Buick Park Avenue