Update: Inexpensive PS pump/fan fix
#51
Here is a link to the replacement bearing that is used in the fan:
http://www.vxb.com/Merchant2/merchan...=695RS-Bearing
http://www.vxb.com/Merchant2/merchan...=695RS-Bearing
#52
#53
How freely should the fan turn by flipping it with a small screwdriver. Mine works when electrified, but every time I change my oil I turn on the key and A/C (no engine running) to verify the fan runs. But it does not freewheel much at all, it slows down very fast.
On a good or new one, how long does it continue to spin when you give it a flip?
YD
On a good or new one, how long does it continue to spin when you give it a flip?
YD
#54
The PS fan, being a DC motor, won't completely freewheel due to the pole magnets. If you spin it slowly, you should feel a "bump" approx every 60 degrees. It will therefore not continue to spin, very long, after you "flip" it with a screwdriver.
How are you getting the fan to come on with key on, engine off, and no radiator fan running? Mine only operates with engine running, and radiator fan running, which is normal.
How are you getting the fan to come on with key on, engine off, and no radiator fan running? Mine only operates with engine running, and radiator fan running, which is normal.
#55
Thank you for the info. I get mine to run by turning on my A/C. I'm sure the A/C forces on the radiator fan, which in turn allows or forces the PS fan to run.
Next oil change I plan to pull the fan and try to see what condition the bearings are in, if possilble.
I am also investigating the web to see which blown fuse indicator circuit would be best to monitor the fan fuse. I'll keep working on that one.
YD
Next oil change I plan to pull the fan and try to see what condition the bearings are in, if possilble.
I am also investigating the web to see which blown fuse indicator circuit would be best to monitor the fan fuse. I'll keep working on that one.
YD
#56
Here is a link to the fan duct from the convertible that would help prevent debris from getting to the fan
Has anyone tried this product - PS fan duck & panel (factory upgraded version)?
It says it can be applied only to 02-06 S Hatchback & 04-08 S Convertible - NOT applicable for Mini Cooper only?
#59
#60
#62
here's a thread I came upon while researching DIY power steering pump fixtures.
http://forums.bimmerforums.com/forum....php?t=1155462
Hope this helps.
http://forums.bimmerforums.com/forum....php?t=1155462
Hope this helps.
#63
My PS pump failed on my 03 MCS (~120K miles, so way out of warranty) in April of 2008. Had the PS pump replaced at a non-Mini garage. They did a great job at 75% the Mini cost.
When that happened I took off the ps fan and cleaned the gunk and debris out of it. It still worked. As a precaution I bought the SPAL VA32-A101-62A fan to keep as a spare.
With this wave of hot weather I thought it would be prudent to check the ps fan again. checked it tonight and it was gritty. Took it out and cleaned it till it spun freely and reinstalled the it. Didn't have the time or soldering tools to put the new fan in tonight. I tested the old fan by turning on the car and turning on the AC. The old ps fan didn't come on after letting the car run with the AC for 2-3 minutes.
Should I wait longer with the AC on for the ps fan to turn on and spin up, or is it pretty instantaneous? If it doesn't come on tomorrow I will pull the fan and test it on a 12V power supply to see it spins up.
When that happened I took off the ps fan and cleaned the gunk and debris out of it. It still worked. As a precaution I bought the SPAL VA32-A101-62A fan to keep as a spare.
With this wave of hot weather I thought it would be prudent to check the ps fan again. checked it tonight and it was gritty. Took it out and cleaned it till it spun freely and reinstalled the it. Didn't have the time or soldering tools to put the new fan in tonight. I tested the old fan by turning on the car and turning on the AC. The old ps fan didn't come on after letting the car run with the AC for 2-3 minutes.
Should I wait longer with the AC on for the ps fan to turn on and spin up, or is it pretty instantaneous? If it doesn't come on tomorrow I will pull the fan and test it on a 12V power supply to see it spins up.
#64
#66
Here is a link to the replacement bearing that is used in the fan:
http://www.vxb.com/Merchant2/merchan...=695RS-Bearing
http://www.vxb.com/Merchant2/merchan...=695RS-Bearing
http://www.vxb.com/Merchant2/merchan..._Code=bearings
Also, what about mounting a traditional mechanical pump where the A/C comp goes? I'm taking mine out anyways, and was going to put one of those mounted deflector pulleys in its place - why not install a mechanical pump there to take its place?
#68
Please remember the Factory fix!!
I strongly recommend installing a new fan for $130...I got mine from the great folks at WayMotorWorks, then get the Factory Upgraded Power Steering Fan Duct & Panel...$80.00
Then you will never have to worry about road grime, sand, dust, ice chunks, etc destroying your fan...and eventually you PS pump again!!
Just putting a screen and or a deflector over or around the fan WILL NOT keep it out of the crap from getting to your fan..it will prevent plastic bags, etc from jamming it.....just like most of the aftermarket solutions.
If you can drill 2 hole in the PS fan mounting shield...you can install this in 10 Minutes...max. I did. Should pay for itself ...very quickly!! Especially if it saves a $500+ PS pump or a 130+ fan.
The fix is simple, eloquent, well engineered, and factory tested. Pretty cheap too!!
"There have been reports of Power Steering Pump failure for higher mileage Mini Coopers. Moss now has the only BMW Mini Cooper factory solution to extend the life of the power steering pump - a special ducting system to supply much needed air to the power steering pump fan. Drilling required."
http://www.mossmini.com/Shop/ViewPro...79&SortOrder=1
I'm sure a few of our vendors must stock this part. It may not be sexy, or make your car go faster, but it makes it go less expensively (saving you from buying expensive parts), longer, and more reliably. Tough to beat that with a stick!!
Then you will never have to worry about road grime, sand, dust, ice chunks, etc destroying your fan...and eventually you PS pump again!!
Just putting a screen and or a deflector over or around the fan WILL NOT keep it out of the crap from getting to your fan..it will prevent plastic bags, etc from jamming it.....just like most of the aftermarket solutions.
If you can drill 2 hole in the PS fan mounting shield...you can install this in 10 Minutes...max. I did. Should pay for itself ...very quickly!! Especially if it saves a $500+ PS pump or a 130+ fan.
The fix is simple, eloquent, well engineered, and factory tested. Pretty cheap too!!
"There have been reports of Power Steering Pump failure for higher mileage Mini Coopers. Moss now has the only BMW Mini Cooper factory solution to extend the life of the power steering pump - a special ducting system to supply much needed air to the power steering pump fan. Drilling required."
http://www.mossmini.com/Shop/ViewPro...79&SortOrder=1
I'm sure a few of our vendors must stock this part. It may not be sexy, or make your car go faster, but it makes it go less expensively (saving you from buying expensive parts), longer, and more reliably. Tough to beat that with a stick!!
Last edited by ZippyNH; 10-31-2009 at 09:13 PM. Reason: added moss link
#69
"There have been reports of Power Steering Pump failure for higher mileage Mini Coopers. Moss now has the only BMW Mini Cooper factory solution to extend the life of the power steering pump - a special ducting system to supply much needed air to the power steering pump fan. Drilling required."
http://www.mossmini.com/Shop/ViewPro...79&SortOrder=1
http://www.mossmini.com/Shop/ViewPro...79&SortOrder=1
tis a bit of a crime that this part wasn't stock on the hardtop minis but was on the drop tops. why? does fit just perfectly on my 06 MCS hardtop FYI
#70
It fit perfectly on my early '05 s. The only mod I had to do to make it fit was drill 2 holes in the metal fan holder/shroud. Newer cars are delevered with the 2 holes in it. Also if you have replaced you ps fan with the assembly...usually 180 vs the 130 dollar fan only part, you should already have the holes. You simply remove one plastic panel from the underside of you car....two half turns of a philips srewdriver, and then put on the new piece. Attatch 4 clips, half turns with a philips, and you are done. I beleve this kit was standard on all the cabrio's, and S's with the auto transmission. Not totaly sure, but it seems to fix all of our ps fan problems, and hopefuly extend the life of the power steering motor. Heck, mini even announched they had made a change in later model mini's to fix the ps issue, and the power steering pump update was listed to be limited to sound/vibration reduction, so I reason, THIS is the change...the duct panel.
Not sure if it is mountible to just-a-Cooper.
Not sure if it is mountible to just-a-Cooper.
#71
Regular cooper too?
I know that the ducting system is designated for "S only", but is there a reason that this won't fit/work on the regular Cooper?
It seems like it would be beneficial for everyone not originally equipped to keep the PS fan operating.
I have a 2003 btw if that makes a difference.
Regards,
Sten
It seems like it would be beneficial for everyone not originally equipped to keep the PS fan operating.
I have a 2003 btw if that makes a difference.
Regards,
Sten
#73
#74
I replace the PSP on my '05 MCS over the weekend - the directions at the beginning of this thread are extremely accurate... the only thing I would add or stress is the need to slot the bolt hole on the subframe - it would greatly ease the re-install and any subsequent removal of the pump... all else is very straightforward.
#75
Is it that a majority of pump failures are associated with high temps in the pump? If the PS fan goes out, then chances are high that the PS will go out as well. (at least in AZ.) Has anyone thought about using a fan that moves more air, like a blower or using an oil cooler for the PS fluid and running to the front of the car?