|
|
08-13-2012, 01:18 AM | #1 |
First Lieutenant
44
Rep 310
Posts |
Is my power steering pump on its way out?
After a couple minutes of flogging the car, a bit (not red-lining, though), I noticed a distinctly different tone on top of the engine noise. It was like an extra hum and it rose and fell with the engine revs (even when in neutral, so had nothing to do with the drivetrain or wheels).
After a while, the noise seemed to subside. But it sounded like maybe some auxiliary pump, as if power steering or brake assist might be on its way out. Are there any known issues with the alternators on these cars? The oil was mostly up to temperature, before I started, but not quite. Maybe reaching full operating temperature is what caused the noise to subside. The car is at about 36k miles. It has about 1.5 track days on it, though I was taking it easy. I normally drive it pretty gently, often short shifting, especially when the oil isn't up to temp.
__________________
Last edited by Drifty//; 08-13-2012 at 01:23 AM.. |
08-24-2012, 01:22 PM | #2 |
Lieutenant
56
Rep 424
Posts |
Im having a similar issue mine seems more prevalent during down reving but it may be because my exhaust is drowning out the noise on the upside. Also its been getting louder progressively over the last 3-6 months (I cant remember exactly when it started). Also it definitely seems to be more prevalent when its done when car is not a full operating temps. Though nowadays there is slight noise all the time which leads me to believe its the alternator but not sure. Never considered the steering pump but that could be the issue as well.
My car is in the body shop for vandalism repairs but its going straight to the dealer when I get it back to look into this. I'll come back to this thread once I let them take a look at it. |
Appreciate
0
|
10-10-2012, 08:39 PM | #3 |
Lieutenant
56
Rep 424
Posts |
yup power steering fluid was low... once I filled it went away. Gonna monitor it to see if it did damage to the pump when it was low but so far so good.. gl..
|
Appreciate
0
|
10-16-2012, 08:06 AM | #4 |
Major
74
Rep 1,339
Posts |
Just had this issue. There is no sensor in the PS fluid reservoir I just found out (this was a surprise, I swear I get a code from the AC unit just when I fart!), so I let my reservoir run really low. I got an intermittment high pitched whine between 1000-2000 rpm. With the full reservoir, the noise has gone away (so far). I also have a drip from my reservoir supply pump pipe which needs fixing too!
__________________
|
Appreciate
0
|
10-16-2012, 02:17 PM | #5 | |
Colonel
90
Rep 2,792
Posts |
Quote:
__________________
2008 IB E92 M3| BBS | KW | Arkym | Platte Forme A.G. | Active Autowerke | K&N | Fabspeed | Dinan | Evolve-R |
|
Appreciate
0
|
11-07-2012, 06:46 PM | #6 |
hey
59
Rep 476
Posts |
having the same issue.. heard a noise a few weeks ago and didnt think anything of it until today. checked the res. and its low. ill add some CHF 11S and monitor...
no leaks. not sure where its going. |
Appreciate
0
|
11-07-2012, 07:23 PM | #7 |
Lieutenant Colonel
30
Rep 1,789
Posts |
Had this and was caused from a leak. Was not aware of the leak until going to the dealer. Fluid was being caught by a "drain pan" so no fluid on the ground. Had the power steering pump replaced.
|
Appreciate
0
|
11-08-2012, 07:20 AM | #8 |
hey
59
Rep 476
Posts |
im going to flip a shit if i have to replace my ps pump at 27k miles. and i am out of warranty by a few months.
|
Appreciate
0
|
11-08-2012, 02:59 PM | #9 |
Captain
215
Rep 875
Posts |
Where is this drain pan located? I would like to check mine just to be safe.
|
Appreciate
0
|
11-08-2012, 03:27 PM | #10 |
hey
59
Rep 476
Posts |
|
Appreciate
0
|
12-03-2012, 02:09 PM | #13 |
Lieutenant
100
Rep 460
Posts |
Yep, just had this happen. Just out of warranty of course. I thought there would be a warning if low fluid was an issue before there was damage to the car; I need to replace the pump.
For future reference, how can you check if the levels are low?
__________________
AA Pulley, Air Filter and Tune - Full Evolve Valvetronic Exhaust - 380/355 Stoptech BBK, BBS FI's and other fun stuff. |
Appreciate
0
|
12-03-2012, 03:19 PM | #14 |
hey
59
Rep 476
Posts |
open the cap and check the level?
|
Appreciate
0
|
12-05-2012, 01:24 PM | #16 |
Lieutenant
100
Rep 460
Posts |
At the risk of sounding like a noob, is it that easy? I have not had a chance to check yet since the car is in the shop but when I get it back I will check for future reference. It will be a PITA to remember to check regularly, but I will do it to save another power steering pump replacement. I thought there would be a warning light or something like with the oil levels.
__________________
AA Pulley, Air Filter and Tune - Full Evolve Valvetronic Exhaust - 380/355 Stoptech BBK, BBS FI's and other fun stuff. |
Appreciate
0
|
12-05-2012, 01:39 PM | #17 | |
hey
59
Rep 476
Posts |
Quote:
lower left, green ring around cap. CHF 11S ONLY. |
|
Appreciate
0
|
12-06-2012, 08:59 PM | #18 |
First Lieutenant
24
Rep 343
Posts |
I also had to recently top off my PS fluid. It was quite low and I was hearing some noise from the pump. Had it checked for leaks and all is well....not sure where it goes. You can easily check the level by removing the cap. It has a little dipstick attached to it with two lines. You're good to go if you're somewhere between the two lines. I topped off until I reached the top line and I've heard no more whine from the pump.
|
Appreciate
0
|
12-10-2012, 03:28 PM | #20 |
hey
59
Rep 476
Posts |
if you are low and have to refill, be sure to bleed the system by turning the wheel from lock to lock 4 or 5 times. recheck level once completed.
|
Appreciate
0
|
05-03-2014, 04:54 AM | #21 | |
Lieutenant
59
Rep 459
Posts |
Quote:
__________________
|ESS VT1-550 510whp|MRF MID|AKRA REAR|CKS COILS|FORGESTAR|CSL TRUNK|GT4 Lip|3D-DESIGN |
|
Appreciate
0
|
05-03-2014, 04:15 PM | #22 |
Stop the hate, get a V8
3858
Rep 8,625
Posts |
The fluid can disappear if you are tracking the car. It can boil over a bit or slosh around during hard cornering. There were some aftermarket caps for the reservoir that attempted to remedy this, but most people just put an old sock or headband around it.
I don't know if there is a PS fluid sensor, but you should be checking it periodically as part of regular maintenance. Top it off with CHF11S or CHF202 (superseded 11S) as needed. BMW doesn't spec a change interval but I did mine at 50k. It's not a totally sealed system, so the fluid does get dirty over time.
__________________
Now: 2017 Corvette Grand Sport, 2021 AMG C63 S sedan
Past: 2011.5 M3 sedan ZCP |
Appreciate
0
|
Post Reply |
Bookmarks |
|
|