alternator
#1
I have a 2004 545i. Can someone check what the voltage is at the battery with the engine running, no accessories on, and let me know what they are getting? I think I have a bad alternator/voltage regulator, but want to compare it before I spend $$$$$$$ for a new alternator. Thanks
#2
Contributors
Join Date: Sep 2008
Location: Massachusetts, USA
Posts: 2,718
Likes: 0
Received 1 Like
on
1 Post
My Ride: 2006 525XI, Jet black on Dakota beige. Premium and winter packages. I consider myself a purist and intend to keep my car absolutely stock and shiny.
2008 328I Convertible, Sapphire black on beige interior. Premium package, NAV, iPod adapter.
Retired: 2002 325I, Titanium silver on black leather. Premium package. Absolutely stock and proud of it.
Originally Posted by pauliehcfr' post='1076608' date='Dec 19 2009, 02:23 PM
I have a 2004 545i. Can someone check what the voltage is at the battery with the engine running, no accessories on, and let me know what they are getting? I think I have a bad alternator/voltage regulator, but want to compare it before I spend $$$$$$$ for a new alternator. Thanks
#4
Originally Posted by porsche911targa' post='1077077' date='Dec 20 2009, 12:49 PM
What is your current voltage at the battery?
At the battery with key off, around 12-12.5 volts. Engine running at idle, 14.9-15.1 volts. when I blip the accelerator pedal, the voltage spikes as high as 16.8 volts and then returns to the 14.9-15.1 volt range.
I am thinking I have a ba alternator, but want to be sure before I spend the money and time replacing it. I am having problems with the radio sound going out for a couple of seconds and then coming back on, dynamic drive failure occurs at the same time, the interior lights flicker, the a/c blower sounds like it surges on acceleration, and more recently the illumination on the window switches goes off and on. Any help would be appreciated.
#5
Senior Members
Join Date: Jun 2007
Location: Atlanta, GA
Posts: 1,845
Likes: 0
Received 1 Like
on
1 Post
My Ride: 2008 535i:
(8/07 Build) Metallic Bronze, Beige NASCA Leather, Ventilated Seats, Sport Pkg, Cold Wxr Pkg, Logic-7 Sound, HUD, Night Vision, PDC, Split Rear Seats, NAV, Premium Pkg, Comfort Access, HD Radio, Sport Auto Trans
Current mods: M-Aero Kit, JB4, Motorcepts 6000k HID Foglamps
Umnitza ICE-Lite 10w LED 6000k AE's
1992 Camaro RS:
Fully Restored w/Custom Interior, 5.0L V8, T-tops, OEM Z28 Foglamps, Inst Cluster, & Spoiler, Custom Sound, Too many engine mods to list
I am thinking I have a ba alternator, but want to be sure before I spend the money and time replacing it. I am having problems with the radio sound going out for a couple of seconds and then coming back on, dynamic drive failure occurs at the same time, the interior lights flicker, the a/c blower sounds like it surges on acceleration, and more recently the illumination on the window switches goes off and on. Any help would be appreciated.
Thread
Thread Starter
Forum
Replies
Last Post
umnitza
Vendor Classifieds
1
09-02-2015 11:28 AM