Alternator problem or not? - MINI Cooper Forum

Second Generation Faults & Fixes MINI faults and fixes Late 2006 - Present

User Tag List

 
LinkBack Thread Tools Rate Thread
post #1 of 5 (permalink) Old Jan 15th, 2014, 06:17 PM Thread Starter
MINI2 Newbie
 
Join Date: Aug 2012
Local Time: 08:41 PM
Posts: 9
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)

United Kingdom
 
Alternator problem or not?

Help please:
I have a Mini One Cabriolet and last weekend it just decided to cut out on me mid reverse! No warning light, no nothing....I had been running around in the car happily for half an hour or so before it cut out.
I called the AA who diagnosed the fault to be the Alternator. New Alternator purchased and fitted but my mechanic is still having problems. Initially the car started no problem but the battery warning light remained on until he gave it some revs....it went off after 15 seconds or so. When stopping the car and starting it again, again the battery light remained on briefly! My car was taken for a good 14 mile run, the light was off but then when starting it up again later in the day it battery light was on and now STAYS ON! Power steering is lost (I'm told as there is not sufficient charge in the battery).
The garage who supplied me with the new Alternator advises it was tested before it was shipped. My mechanic advises the battery is holding its charge and so it must be an Alternator problem...and I'm stuck in the middle
Has anyone come across anything this before, or can anyone offer me some advise.
Your hoping Laura
themacclass is offline  
Sponsored Links
Advertisement
 
post #2 of 5 (permalink) Old Jan 15th, 2014, 10:35 PM
MINI2 Master
 
mab01uk's Avatar
 
Join Date: Nov 2006
Location: London
Local Time: 09:41 PM
Posts: 5,828
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)

United Kingdom Male
 
What year is your Mini and is it the original BMW battery?
Battery needs to be properly tested under load not just for holding a charge. If in doubt replace it.
If it is over or around 5-7 years old it will be near or at the end of its life and due for replacement. Modern batteries fail suddenly as you described with little warning. The electric power steering pump on earlier Mini's puts a high demand on the battery particularly while parking and reversing at slow speed.
mab01uk is offline  
post #3 of 5 (permalink) Old Jan 16th, 2014, 06:51 PM Thread Starter
MINI2 Newbie
 
Join Date: Aug 2012
Local Time: 08:41 PM
Posts: 9
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)

United Kingdom
 
Hi...it's 2004 R52. 3rd Alternator has been put on today and the fault is still there! My mechanic also put on a new battery for a while just to see what happened and it didn't go away,....... so no alternator fault, no battery fault (so I'm told)....any other ideas anyone....feeling stressed out
themacclass is offline  
post #4 of 5 (permalink) Old Jan 16th, 2014, 11:08 PM
MINI2 Master
 
mab01uk's Avatar
 
Join Date: Nov 2006
Location: London
Local Time: 09:41 PM
Posts: 5,828
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)

United Kingdom Male
 
Check power steering pump for internal fault......you mentioned it is it not working and they can also affect alternator and therefore the battery charging system when they go faulty.

Cooper "S" R53 Power Steering Pump Failure
"A Mini Cooper "S" R53 was driven into the shop last week. The alternator light was on, and there was a horrible burnt smell and smoke coming from under the hood. Once the smoke cleared, (literally) we checked what was going on. My first thought was alternator seized up and the burning smell was the belt. The belt was moving freely, and the smoke had stopped. However the power steering had stopped working. Evidently what has happened the P/S pump had grounded internally causing the large positive power lead to the pump to begin melting down. Is the power steering pump the cause of the melt down or the result of the melt down? Once we removed the burnt power lead from the P/S pump the alternator light went off and the alternator was able to charge the system. Evidently the alternator was severely over loaded to a point where it was not able to keep up with the demand."
MINI COOPER NEWS FEED, Mini Cooper Parts Catalog, Video Repair Tips, and Project Cars. | PROMINI.CO: Cooper "S" R53 Power Steering Pump Failure - click to read

power steering pump causing alternator failure?
http://www.mini2.com/forum/first-gen...r-failure.html
mab01uk is offline  
post #5 of 5 (permalink) Old Jan 18th, 2014, 10:47 AM Thread Starter
MINI2 Newbie
 
Join Date: Aug 2012
Local Time: 08:41 PM
Posts: 9
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)

United Kingdom
 
Thanks all for advice so far.....I now have it booked into a Mini garage next week (if I can get it there)....I will share this info with garage x
themacclass is offline  
Thanks for this post from:
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the MINI Cooper Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




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:



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