R50/53 Another battery alternator thread
#1
Another battery alternator thread
Just picked up my first mini, 06 S with 70k. Service has been kept up fairly well. Prior to my purchase the alternator was replaced for a 2nd time in the 70k. The battery was replaced 2 years ago with a DieHard platinum AGM.
When I hard accelerate with the AC on the battery light kicks on until I let up. If the AC is off l, no battery light. The light doesn't come on at idle. Power steering seems fine.
I checked the voltage with a gauge in the cig lighter. 13.7 at idle. 13.1 with AC on, sometimes dropping down to 12.5. I charged the battery up to 12.75, shortly after it settled at 12.3. After a drive it settles at 12.3.
I have a 15% reduced pulley. it seems like the car was built with having an underpowered alternator - cases of PS pumps going out when the alternator dies. So is the issue with the new alternator or something else?
Thanks all!
When I hard accelerate with the AC on the battery light kicks on until I let up. If the AC is off l, no battery light. The light doesn't come on at idle. Power steering seems fine.
I checked the voltage with a gauge in the cig lighter. 13.7 at idle. 13.1 with AC on, sometimes dropping down to 12.5. I charged the battery up to 12.75, shortly after it settled at 12.3. After a drive it settles at 12.3.
I have a 15% reduced pulley. it seems like the car was built with having an underpowered alternator - cases of PS pumps going out when the alternator dies. So is the issue with the new alternator or something else?
Thanks all!
#3
#5
#6
#7
Trending Topics
Thread
Thread Starter
Forum
Replies
Last Post
khnitz
Stock Problems/Issues
3
10-28-2021 08:36 PM
rkj__
R60/R61 Stock Problems/Issues
6
10-15-2019 07:11 AM
owl
Stock Problems/Issues
5
04-08-2009 05:06 PM