07 B9 with 73K miles
A few days ago, I got the warning lights on the dash of battery, brake, and rear diff temp. It was my battery and it was almost dead. My alternator tested on the car as a bad voltage regulator. I had replaced it 10 months ago with an aftermarket from O'Reilly's. I got the battery charged up and the voltage was 12.6 with the car running or not. The alternator was replaced under warranty.
I installed a new alternator and all connections and grounds were cleaned up. The new alternator is putting out 13.14 volts. I am reading it should be over 14. It seems to be charging the battery and I can run accessories. There are no warning lights now.
The kicker is that when I returned the old alternator, it bench tested fine even after it shows voltage regulator failed on the car. And the new alternator is testing on the car as voltage regulator failed.
Any ideas what could be causing the lower voltage on the car if not the alternator?
Thanks!
A few days ago, I got the warning lights on the dash of battery, brake, and rear diff temp. It was my battery and it was almost dead. My alternator tested on the car as a bad voltage regulator. I had replaced it 10 months ago with an aftermarket from O'Reilly's. I got the battery charged up and the voltage was 12.6 with the car running or not. The alternator was replaced under warranty.
I installed a new alternator and all connections and grounds were cleaned up. The new alternator is putting out 13.14 volts. I am reading it should be over 14. It seems to be charging the battery and I can run accessories. There are no warning lights now.
The kicker is that when I returned the old alternator, it bench tested fine even after it shows voltage regulator failed on the car. And the new alternator is testing on the car as voltage regulator failed.
Any ideas what could be causing the lower voltage on the car if not the alternator?
Thanks!