I have the normal drips and drops under the car, but not a 1/2 quart worth. Luckily I had a fresh quart in the trunk.
Curious indeed.
Why is my power steering pump whining and howling?
Why is my power steering pump whining and howling?
Because it was 1/2 quart low on fluid.
I have the normal drips and drops under the car, but not a 1/2 quart worth. Luckily I had a fresh quart in the trunk.
Curious indeed.
I have the normal drips and drops under the car, but not a 1/2 quart worth. Luckily I had a fresh quart in the trunk.
Curious indeed.
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Bimmerguy2002
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Kyle in NO
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Chimi-Changa
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Check upper clamp on low pressure hose yet? They have pinch style clamps (not worm drive) Mine was leaking there, tightened pinch clamp, and installed a worm drive one right below it (make sure still on spout) sealed mine. Thanks to previous posts on the subject, ( and "a" for the suggestion of tightening upper clamp every once in a while)
Yes- if making noise... check bolts, besides fluid, and clamps.
Yes- if making noise... check bolts, besides fluid, and clamps.
I think he was using Redneck, not Spanish.booker wrote:I know you're part mexican, but can you speak english? Gracias.
Regardless, they can and will suck air if everything isn't tight on the supply side. It doesn't have to be leaking fluid to suck air and cause noises. A plugged filter is another possibility, but changing mine only made it worse until I tightened the pump body bolts.
noisy pump
Same thing happened to me. Changing the filter, changing the atf, installing a new pump, none of that worked. Tightening the belt, that worked. It used to cut out all together at times when it was warm. All of a sudden, no assist at all. All due to a loose belt.
Re: noisy pump
I always got that after going thru a puddle unless the belt was so tight I feared for the bearing's life. I mean way tighter than the alt or A/C belt. Even overtight didn't do anything, it had to be way overtight.D. wrote: Tightening the belt, that worked. It used to cut out all together at times when it was warm. All of a sudden, no assist at all. All due to a loose belt.
since some of you have experienced this...
My M5 makes a similar groaning/whining sound during low speed turns and when applying the brakes right before a stop. I've checked the belt tension, changed the filter, and flushed fluid I haven't checked my bolts yet, I'll try it tonight. Can the bolts be loose, pump drawing in air, and still show no signs of leaking from the case?
Re: since some of you have experienced this...
Yes they can. It doesn't seem like it, but was true in my case. The bottom of the pump may not have been completely dry, but it did not mark it's spot, nor did it use any fluid. Mine had been getting worse for a couple of years starting to make noise at say 25F or below, and eventually at 40F or perhaps a bit higher. New fluid didn't help, nor did a new filter, that just made it worse. I replaced the suction hose to no avail, then finally tightened the pump bolts and wow, no more moaning/groaning on cold AMs. The bolts weren't loose, but they weren't tight either. Maybe you would say they were snug, not tight.S38Mike wrote:My M5 makes a similar groaning/whining sound during low speed turns and when applying the brakes right before a stop. I've checked the belt tension, changed the filter, and flushed fluid I haven't checked my bolts yet, I'll try it tonight. Can the bolts be loose, pump drawing in air, and still show no signs of leaking from the case?
Ok, so tonight I gave my M5 a closer look. I tightened the bolts on the pump body, they were already pretty tight. I checked the hose clamps on the supply/suction hose from reservoir to pump, found the top clamp was moderately snug so I tightened it more,to my liking. I inspected the hoses closely and found was I had originally thought of as minor seeping from the 2 short rubber sections of hose that connect the hard lines to the p/s cooling loop had begun to leak even worse in the past month. I took out the p/s cooling loop behind the kidneys and replaced the 2 short sections of hose with clamps that connect the hard lines to the cooling loop. I then reassembled everything, refilled and corrected fluid level and cleaned off the residue. I took it for a short drive and the whine is still there only under braking and when turning the wheel. At this point I'm out of ideas other than a new pump$$$$$. Is there anything else I can check? Oh well, at leaks the leak is fixed and my engine compartment got a nice wash.
Is the noise the low on fluid moan/groan? Foam in your reservoir? If so I would not suspect the pump, even though that's where the noise is coming from. It's sucking air and you have to figure out why. Pumps generally fail by failing to pump, not by not having enough to pump. Focus on the suction side, from the reservoir to the pump. And as far as $$$, is there any reason a regular old 535 pump wouldn't work? I mean a P/S pump is a pump, nothing special about it, just a regular old vane pump.
If you have a continuous noise from the P/S it could also be related to the brakes on an M30 powered car. If there is a constant fluid flow through the regulator/accumulator it makes a noise just like it will when it recharges the accumulator. Not the same sound but similar. So maybe a bad accumulator and the brakes can't 'charge' up?
