R52 :: Cabrio Talk (2005-2008) Cooper and Cooper S convertible (R52) discussion.

R52 Intermittent brake / steering issues

Thread Tools
 
Search this Thread
 
  #1  
Old 10-14-2015, 10:24 AM
mdutton11's Avatar
mdutton11
mdutton11 is offline
2nd Gear
Thread Starter
Join Date: Mar 2012
Posts: 60
Likes: 0
Received 0 Likes on 0 Posts
Intermittent brake / steering issues

Here's an odd one - every couple of weeks when I first apply the brakes there is no assist - peddle is very difficult to push. I hit it a couple of times and the assist comes on.

1 month ago as I was backing out of a parking spot, the assist to my steering stopped and it felt like manual steering. Once I made a couple of turns the assist came back.

Of note is my crank pulley failed 2 weeks ago and I replaced with ATI dampener. Brakes have failed once since then but have not had another steering issue since the first time.

Related? Coincidence? Any ideas on where to start looking?
 
  #2  
Old 10-14-2015, 11:27 AM
PelicanParts.com's Avatar
PelicanParts.com
PelicanParts.com is online now
Vendor
Join Date: Apr 2012
Location: Harbor City, CA
Posts: 7,187
Received 62 Likes on 59 Posts
Not sure if both are related, but for the steering issue it could be that your power steering pump is going out intermittently. If so, it may finally just stop working all together. The power steering pump on the MINI is one of those items that seems to have a bad reputation. In talking to many MINI owners, it seems that this is one of the more common items to fail on the car. Lots of information about the pump issue in this NAM thread HERE. Check the fan too to make sure it's working properly. As for the pedal, I ran across this thread HERE with some good information. Such as you could be losing vacuum assist, which gives you the stiff pedal you're describing.
 
__________________
Your Trusted Source For DIY and Parts
FREE SHIPPING over $99 click here
MINI Parts | DIY Help | Facebook | Twitter | Instagram | YouTube | Promos
888.280.7799 | 6am - 5pm PST
  #3  
Old 10-14-2015, 09:46 PM
Racingguy04's Avatar
Racingguy04
Racingguy04 is offline
5th Gear
Join Date: Sep 2012
Posts: 935
Received 123 Likes on 98 Posts
+1 on the power steering pump, that's pretty much how mine started to fail.

What do you mean when you say the brakes failed? that's alot more worrying to me.
 
  #4  
Old 10-15-2015, 01:50 PM
mdutton11's Avatar
mdutton11
mdutton11 is offline
2nd Gear
Thread Starter
Join Date: Mar 2012
Posts: 60
Likes: 0
Received 0 Likes on 0 Posts
Steering pump sounds right - gunna call the dealer about the recall - I am 2005 with 104K miles. Should qualify.

Brakes happening every week or two - only after being parked for a while and only happens with initial first few pumps. Feels like it goes to manual braking without any power assist. After a couple of pumps the assist comes back. I am thinking either brake booster or vacuum leak.
 
  #5  
Old 10-15-2015, 04:40 PM
ZippyNH's Avatar
ZippyNH
ZippyNH is offline
6th Gear
iTrader: (1)
Join Date: Sep 2009
Location: Southern NH
Posts: 12,605
Likes: 0
Received 36 Likes on 36 Posts
Bet the pump might be OK...the shaft that goes from the steering wheel has a u-joint that fails...leads to a very stiff steering wheel in some turns...
Try to spray it with lube..see if it helps..if it does, time for a new u-joint...
Very few 2005 cars get the recall on the pump...it HAD TO BE BUILT IN 2004, AS A 2005 MODEL YEAR car...look at the PRODUCTION DATE on the data plate on the drivers side door jamb...

As for brakes...don't mess with them...sounds like you need to get them looked at...
Any pedal travel or just hard pedal?
 
  #6  
Old 10-16-2015, 08:46 AM
mdutton11's Avatar
mdutton11
mdutton11 is offline
2nd Gear
Thread Starter
Join Date: Mar 2012
Posts: 60
Likes: 0
Received 0 Likes on 0 Posts
Production date 1/2005 so sounds like no go on pump.

Brakes - can a brake shop handle it or do I have to go the the dreaded ripoff mini shop?
 
  #7  
Old 10-25-2015, 12:13 PM
mdutton11's Avatar
mdutton11
mdutton11 is offline
2nd Gear
Thread Starter
Join Date: Mar 2012
Posts: 60
Likes: 0
Received 0 Likes on 0 Posts
Problem solved. So I had another thread going about OBD code P 1242 (excessive boost upstream from manifold). Had to take off the throttle body and BPV to track it down but the vacuum tube broke free from the MAP sensor. Turns out this tube attached to the air intake 1 inch from the brake booster vacuum tube. Now that I fixed the MAP sensor tube no more brake issue. Seems the brake booster was getting some of the vacuum leak from the MAP sensor.

Easy and cheap fix - imagine that!
 
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Doc Pain
R56 :: Hatch Talk (2007+)
4
03-10-2021 04:50 AM
Shomare
1st Gen Countryman (R60) Talk (2010-2015)
39
10-19-2015 03:33 PM
daviday
R50/R53 :: Hatch Talk (2002-2006)
1
09-25-2015 01:31 AM
sevin
R50/R53 :: Hatch Talk (2002-2006)
0
09-24-2015 05:00 AM
ECSTuning
Tires, Wheels & Brakes
0
09-18-2015 01:06 PM



Quick Reply: R52 Intermittent brake / steering issues



All times are GMT -7. The time now is 04:41 PM.