Click to go to Forum Home Click to go to maXbimmer Home

Go Back   maXbimmer Forums > General > General Discussion
User Name
Password


Welcome to Maxbimmer.com!

You are currently viewing our boards as a guest which gives you limited access to view most discussions and access our other features. By joining our free community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join our community today!

Reply
 
Thread Tools Rate Thread Display Modes
Old 06-06-2013, 05:13 PM   #1
jabela
4th Gear Member
 
Join Date: Apr 2007
Location: Toronto, ON, Canada
Posts: 734
Alternator and/or Battery issue?

So, I'm driving home the other day and my radio starts cutting out. I get home, check the voltage while running and it's at 11.7V
So this looks like a bad alternator regulator.
However, I let it cool down and start up, and it was showing 14V for one minute, then went down to 11.7V My guess is that the regulator overheats, or the brushes gave a little life before dying again.

Another thing, I filled up the battery cells with water, and have been charging it for 2 days but it's only at 80% charge. Battery gone too? It's only a few years old, but maybe the bad alternator killed it.

Anyone have a Bosch alternator or just the regulator they can lend me? I ordered one but it won't be here till next week.

Thanks!
__________________

2002 E46 325ci // 5spd // ISC N1 Coilovers
www.modernapothecary.ca
jabela is offline   Reply With Quote
Old 06-06-2013, 06:21 PM   #2
Eurostyle
MaXsponsor
 
Eurostyle's Avatar
 
Join Date: Feb 2002
Location: Milton
Posts: 14,911
Replace the alternator and see how the battery does, my guess is that it will recover if only a few years old...

Also get a battery load tester/charging system tester, they are under $50 and will take the guessing out of the job.
__________________
BIMMER HEAVEN
Specialized in BMW recycling, all OEM used parts
Up to 90% off new cost!!!
Most models E30 E36 E46 E90 E92 E34 E39 E60 E32 E38 E65 E66 X5 M3 M5


Call 11-8PM 416 821-2578
New inventory daily. 50+ cars in stock!
Eurostyle is offline   Reply With Quote
Old 06-06-2013, 06:28 PM   #3
jabela
4th Gear Member
 
Join Date: Apr 2007
Location: Toronto, ON, Canada
Posts: 734
I have an intelligent tester just like this one below. Maybe it's just reconditioning the battery. I'll see what state it's at when I get home. Alternator could have been bad for a while...

http://www.canadiantire.ca/AST/brows....jsp?locale=en
__________________

2002 E46 325ci // 5spd // ISC N1 Coilovers
www.modernapothecary.ca
jabela is offline   Reply With Quote
Old 06-07-2013, 12:03 AM   #4
windwagen
6th Gear Member
 
windwagen's Avatar
 
Join Date: Jul 2004
Location: Markham
Posts: 1,821
Loose belt?
windwagen is offline   Reply With Quote
Old 06-07-2013, 12:17 AM   #5
Eurostyle
MaXsponsor
 
Eurostyle's Avatar
 
Join Date: Feb 2002
Location: Milton
Posts: 14,911
Quote:
Originally Posted by windwagen View Post
Loose belt?
20 years ago, maybe! Not with todays systems!
__________________
BIMMER HEAVEN
Specialized in BMW recycling, all OEM used parts
Up to 90% off new cost!!!
Most models E30 E36 E46 E90 E92 E34 E39 E60 E32 E38 E65 E66 X5 M3 M5


Call 11-8PM 416 821-2578
New inventory daily. 50+ cars in stock!
Eurostyle is offline   Reply With Quote
Old 06-07-2013, 02:21 AM   #6
jabela
4th Gear Member
 
Join Date: Apr 2007
Location: Toronto, ON, Canada
Posts: 734
Took it apart, brushes are definitely too worn. You can see that one is much shorter than the other.
Attached Images
File Type: jpg 20130607_004636a.jpg (100.7 KB, 44 views)
__________________

2002 E46 325ci // 5spd // ISC N1 Coilovers
www.modernapothecary.ca
jabela is offline   Reply With Quote
Old 06-08-2013, 09:37 AM   #7
pawelgawel
3rd Gear Member
 
Join Date: Nov 2010
Location: London
Posts: 351
If the regulator didnt solve the issue, check your ignition switch.. clean it up and reconnect evefything. I chased a similar issue for days and it was the ignition switch

Sent from BimmerApp mobile app
pawelgawel is offline   Reply With Quote
Old 06-09-2013, 01:28 AM   #8
jabela
4th Gear Member
 
Join Date: Apr 2007
Location: Toronto, ON, Canada
Posts: 734
Wow, ignition switch gave you low voltages? Must have driven you crazy looking for that.

So, installed new regulator and all is well. It's making 14.1V while running.

Got the new regulator at Oakville Starter Alternator http://www.oakvillestarteralternatorlimited.ca/
The guy offered me a chinese made one for $50 or a Bosch UK made one for $100. I read bad things about the chinese units, so went for the Bosch.

Guy said Budd's buys the chinese units from him with no problems... I'm sure they still charge $800 for it. Yet another reason to avoid the stealerhip.

Posting image of new regulator, which has an updated part number.
new Bosch BR14-M1 F 00M 145 360
old Bosch BR140-M1-V14 F 00M 145 251
Attached Images
File Type: jpg 20130607_192647a.jpg (113.5 KB, 29 views)
__________________

2002 E46 325ci // 5spd // ISC N1 Coilovers
www.modernapothecary.ca
jabela is offline   Reply With Quote
Old 06-09-2013, 08:59 AM   #9
windwagen
6th Gear Member
 
windwagen's Avatar
 
Join Date: Jul 2004
Location: Markham
Posts: 1,821
nice job - thanks for the tip!
windwagen is offline   Reply With Quote
Old 06-09-2013, 10:59 AM   #10
pawelgawel
3rd Gear Member
 
Join Date: Nov 2010
Location: London
Posts: 351
Damn.. $100 for the rectangular plug??? You can get this for $50 on line np. I replaced mine (oval) that was close to impossible to find for $90... when searching for this, everyone had the rectangular.

Sent from BimmerApp mobile app
pawelgawel is offline   Reply With Quote
Old 06-09-2013, 11:00 AM   #11
pawelgawel
3rd Gear Member
 
Join Date: Nov 2010
Location: London
Posts: 351
And yes... ignition switch was not even close on my mind. Took it to a shop and got raped!

Sent from BimmerApp mobile app
pawelgawel is offline   Reply With Quote
Old 06-09-2013, 11:29 AM   #12
jabela
4th Gear Member
 
Join Date: Apr 2007
Location: Toronto, ON, Canada
Posts: 734
Quote:
Originally Posted by pawelgawel View Post
Damn.. $100 for the rectangular plug??? You can get this for $50 on line np. I replaced mine (oval) that was close to impossible to find for $90... when searching for this, everyone had the rectangular.

Sent from BimmerApp mobile app
Where can you get Bosch made in UK regulators for $50? I could get made in China version for $50.
Anyhow $50 is with having it right away.


One other important tip, the back ventilation cover of me alternator was full of leaves, which probably overheated the regulator and speed up its failure, so clean yours out if you haven't lately. I'm going to look at putting a screen on the inlet to block this debris from causing issues.
__________________

2002 E46 325ci // 5spd // ISC N1 Coilovers
www.modernapothecary.ca
jabela is offline   Reply With Quote
Reply

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On

Forum Jump


All times are GMT -4. The time now is 06:49 AM.


Powered by vBulletin® Version 3.8.1
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.