Alternator - ready to throw the car in the bin! - MINI Cooper Forum

First Generation MINI Cooper S MINI Cooper S 2002 - 2006

User Tag List

 
LinkBack Thread Tools Rate Thread
post #1 of 6 (permalink) Old Aug 14th, 2014, 07:37 PM Thread Starter
MINI2 Newbie
 
Join Date: Aug 2014
Local Time: 07:36 PM
Posts: 2
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)

 
Alternator - ready to throw the car in the bin!

Hi all

I have been a lurker on the forum for ages, mostly a reader than a poster. I have a lovley R53 BRG Cooper S. 55k Miles, really good nick. Purchased in March, great history etc etc.

Couple months ago the power steering pump went, tried to fix, no joy, had to buy a refurb off eBay.

Two weeks ago, had to call the AA as car just died. Steering heavy etc. classic alternator fail. So off to Euro Car Parts, 200 quid lighter, couple hours of swearing (its a horrible job!)...and there is a new alternator in the car.

However, test the battery fine circa 12.8volts, start the car voltage drops to the pre-alternator change reading of circa 11 volts.

I have checked:
- Battery, fully charged on my bench power supply. Also tried another battery from another car
- All fuses, none blown
- High voltage fuses, all meter out
- Alternator connections

Any ideas?
- Short?
- PAS causing issues (worried I can't hear it whine, maybe because the alternator is not powering)

Any help appreciated, else its going down the tip!

Ed
sweetlikealemon is offline  
Sponsored Links
Advertisement
 
post #2 of 6 (permalink) Old Aug 15th, 2014, 08:00 AM
MINI2 Privilege Member
MINI2 Master
 
Join Date: Mar 2012
Local Time: 07:36 PM
Posts: 3,829
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 50 Post(s)

United Kingdom Male
 
So youre saying the new alternator isnt charging?
Do you have a red ignition/charge warning light come up on the dash with the ignition on before the engine starts?
It used to be with alternators that it needed the charge light to work to excite the alternator to kick it into charging, if the light didnt work the alternator would not start charging?
The Nun is offline  
post #3 of 6 (permalink) Old Aug 15th, 2014, 08:36 AM
MINI2 Master
 
mab01uk's Avatar
 
Join Date: Nov 2006
Location: London
Local Time: 07:36 PM
Posts: 5,814
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)

United Kingdom Male
 
Alternator and power steering pump problems are closely linked on Mini's and sometimes difficult to pin down which is at fault without diagnostics.....but if alternator is new it may be the refurbed ps pump internal control circuits failing which is not unheard of. If it is a BBA-Reman pump they will replace under warranty if fault is found in returned pump but off course this does not allow for your time and labour involved.

Is there no ps pump whine even when parking and is steering heavy again?
mab01uk is offline  
post #4 of 6 (permalink) Old Aug 18th, 2014, 07:49 PM Thread Starter
MINI2 Newbie
 
Join Date: Aug 2014
Local Time: 07:36 PM
Posts: 2
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)

 
Thanks for the replies guys.

Alternator appears not to be charging. Red ignition light is on the dash both on pre-start ignition, and post start.

PS pump is a BBA-Reman refurb, with warranty, but wanted to bottom out before returning (as you probably know it's a ball ache of a job to remove!)

After starting there is no ps pump whine, even parked, and steering is heavy...so given the close link it sounds like the pump.

If I unplug the pump, does anyone know if the charge circuit will kick back in? That way I can proove its the pump (hopefully without removing it in the first instance)

Thanks again.
Ed
sweetlikealemon is offline  
post #5 of 6 (permalink) Old Aug 19th, 2014, 01:43 PM
MINI2 Regular
 
Join Date: Apr 2014
Location: Melbourne
Local Time: 04:36 AM
Posts: 122
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 9 Post(s)

Australia Male
 
If your Alternator isn't charging, your PS Pump wont receive the required signal from the Alternator to tell it to start up !
Milpol is offline  
post #6 of 6 (permalink) Old Aug 19th, 2014, 05:52 PM
MINI2 Master
 
mab01uk's Avatar
 
Join Date: Nov 2006
Location: London
Local Time: 07:36 PM
Posts: 5,814
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)

United Kingdom Male
 
BMW Planet has lots of useful MINI technical information as pdf file downloads which could help you diagnose.
This is the pdf file for the BC1 for example:
http://www.bmw-planet.com/lib/mini/B...L%20MODULE.pdf

Download of all 89 MINI technical pdfs here (545MB zipped):
LIB > Mini technical documents | BMW-Planet.com
mab01uk is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Rate This Thread
Rate This Thread:



Similar Threads
Thread Thread Starter Forum Replies Last Post
TWINI - Twin engine R53 Endurance Race Car pooper MINI in Motorsport 3 Apr 22nd, 2015 06:35 AM
MCS Engine noise when cold CBCooper Second Generation Faults & Fixes 2343 Apr 14th, 2015 12:28 PM
New 14 plate Mini Cooper SD Coupe Nightmare Kickboxkel Welcome New Members 7 Apr 4th, 2015 12:33 PM
URGENT - HELP/ADVICE NEEDED FOR R56 Mini Cooper S 2007 LadyUK Second Generation MINI Cooper S 18 Oct 23rd, 2012 06:29 PM
Mini Australia service chilld Dealership Feedback 4 Sep 4th, 2012 05:29 AM

Posting Rules  
You may post new threads
You may 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 Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome