scottg918514
Full Access Member
- Joined
- Sep 13, 2010
- Posts
- 341
- Reaction score
- 5
1.A few weeks ago, had the car running off the battery for about 10 min. Then couldn't start after that.
2. Jumped the battery and then hooked up a charger, charged it to 100%.
3. Tested the charge a few days later and it was 50%.
4. Put a new battery in thinking the battery wasn't accepting charge anymore. Also notice the voltmeter, starting out at 14+ and dropping to 12ish after a few minutes of driving.
5. New battery and voltmeter stayed around 14 for a couple days, then starting dropping to 12 after a few minutes of driving.
6. OK, bad alternator, or voltage reg, which is in the alternator. I replaced alternator, yesterday.
7. Tested battery charge before new alternator, it was 60%. Installed new alternator, drove around, voltage stayed at 14+, tested battery after drive, 90% charge. Yeah, problem fixed.
8. Drove today, voltage dropped to 12ish after a few minutes. @#%&!
9. Tested battery charge, 80%.
What gives????? The cables all look good, clean. Does the voltage regulator drop the voltage to 12 when battery fully charged? (even though it really isn't).
Is there another piece of the charging system that I need to look at?
Also, no codes.
2. Jumped the battery and then hooked up a charger, charged it to 100%.
3. Tested the charge a few days later and it was 50%.
4. Put a new battery in thinking the battery wasn't accepting charge anymore. Also notice the voltmeter, starting out at 14+ and dropping to 12ish after a few minutes of driving.
5. New battery and voltmeter stayed around 14 for a couple days, then starting dropping to 12 after a few minutes of driving.
6. OK, bad alternator, or voltage reg, which is in the alternator. I replaced alternator, yesterday.
7. Tested battery charge before new alternator, it was 60%. Installed new alternator, drove around, voltage stayed at 14+, tested battery after drive, 90% charge. Yeah, problem fixed.
8. Drove today, voltage dropped to 12ish after a few minutes. @#%&!
9. Tested battery charge, 80%.
What gives????? The cables all look good, clean. Does the voltage regulator drop the voltage to 12 when battery fully charged? (even though it really isn't).
Is there another piece of the charging system that I need to look at?
Also, no codes.