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      01-25-2015, 09:32 PM   #1
oct1285
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Power steering pump whine

Update: I had someone give it gas while I listened for the sound and there is a definite whine coming from the power steering pump when under load. Its not speed dependent, but happens whenever I give it gas. There's fluid in the reservoir, but the fluid looks very brownish green. I'm going to have the system flushed and hopefully the whine goes away. The serpentine belt looks in good condition and doesn't feel loose.

I recently had the stock crank and power steering pulley put back on my car, previously I had the rogue engineering power pulleys and the car was fine. After having the stock pulleys put back on I'm noticing a whine when the AC is on and when pressing the gas pedal (regardless if I'm accelerating or not.) When pressing the gas, it's a slight whine almost like a supercharger whine. And it happens throughout the RPM range. I'm thinking maybe loose belt? Or maybe my AC and power steering need to be recharged?

Last edited by oct1285; 01-26-2015 at 02:12 PM.
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      01-26-2015, 01:19 PM   #2
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Quote:
Originally Posted by oct1285
I recently had the stock crank and power steering pulley put back on my car, previously I had the rogue engineering power pulleys and the car was fine. After having the stock pulleys put back on I'm noticing a whine when the AC is on and when pressing the gas pedal (regardless if I'm accelerating or not.) When pressing the gas, it's a slight whine almost like a supercharger whine. And it happens throughout the RPM range. I'm thinking maybe loose belt? Or maybe my AC and power steering need to be recharged?
Check your power steering fluid. It might be low.
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      01-26-2015, 02:06 PM   #3
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I checked the fluid, there's the appropriate amount in there. The whine is definitely coming from the power steering pump. I had someone give it gas while I listened for the noise. The noise only happens when I'm giving it gas. Doesn't make any noise when turning the steering wheel.
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      01-26-2015, 02:38 PM   #4
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Quote:
Originally Posted by oct1285 View Post
I checked the fluid, there's the appropriate amount in there. The whine is definitely coming from the power steering pump. I had someone give it gas while I listened for the noise. The noise only happens when I'm giving it gas. Doesn't make any noise when turning the steering wheel.
I had a similar whine a while back and the same issue as you, but my problem was low fluid. Hmm.. maybe a loose belt, pulley, or the belt needs time to soften up? Sorry I cant be of much more help
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      01-26-2015, 02:53 PM   #5
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Hopefully a power steering flush will solve it
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      01-26-2015, 03:52 PM   #6
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Had same problem awhile back, I flushed out my fluid put new it and it totally went away.
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      01-27-2015, 08:42 PM   #7
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Thanks for the update. I've been having a similar noise. Will check out fluid and pump.
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      01-28-2015, 07:47 AM   #8
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Does it sound like this?

Sorry for potato quality...

https://www.youtube.com/watch?v=i_If...ature=youtu.be
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      01-28-2015, 02:42 PM   #9
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Quote:
Originally Posted by Juicehead View Post
Does it sound like this?

Sorry for potato quality...

https://www.youtube.com/watch?v=i_If...ature=youtu.be
Yes, but not as loud.

I had a shop flush the power steering system and found metal shavings. They say it's a sign that the pump is on its way out. Due to my negligence, I was probably driving around on a dry pump for quite a while. The flush did seem to make the whine go away while driving or at least it's quiet enough now to where I can't really hear it while normal driving
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      01-27-2016, 12:49 AM   #10
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Does this problem sound like the car has a supercharger? I think I need to flush mine PS fluid soon
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      03-10-2016, 02:49 AM   #11
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Quote:
Originally Posted by Juicehead View Post
Does it sound like this?

Sorry for potato quality...

https://www.youtube.com/watch?v=i_If...ature=youtu.be
I just encountered the same noise earlier today when my friend took my car out for a spin and did a power slide. Im probably gonna have to do a flush too =(
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      03-10-2016, 10:55 AM   #12
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Had similiar issue. flush/change power steering fluid and ure good.
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      03-10-2016, 11:29 AM   #13
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if it looks shimiry like metal flake. PS pump is toast. ask me how I know.
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      03-10-2016, 03:20 PM   #14
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Quote:
Originally Posted by kkhurr View Post
Had similiar issue. flush/change power steering fluid and ure good.
What he said. Had the whine as well. Flushed the fluid, new Pentosin, and we good.

This is a good excuse to get a Mity-Vac if you don't have one already. Makes power-steering fluid swaps easy as can be. Suck the old stuff out, pour the new stuff in.
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      03-10-2016, 03:30 PM   #15
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Fresh fluid and throw a little moly in there. Should keep the sliding vanes happy
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      03-10-2016, 04:03 PM   #16
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Replace the whole reservoir, its cheap and will have a new filter as well....
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      03-11-2016, 06:01 PM   #17
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Yeah planning to flush it tomorrow although Im just gonna use a hand pump to suck out fluid, refill it, turn the car on, turn wheels left to right, and then repeat the whole process 4 to 5 times. Hopefully it will solve it. I havent done a full flush before and Ive heard it can be messy as well as complicated for me.
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      03-11-2016, 07:04 PM   #18
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Quote:
Originally Posted by Shredicus View Post
Fresh fluid and throw a little moly in there. Should keep the sliding vanes happy
As in Liqui-Moly MSo2? Have you tried that before? Now you have me curious.
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      03-11-2016, 07:49 PM   #19
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Quote:
Originally Posted by Hujan View Post
As in Liqui-Moly MSo2? Have you tried that before? Now you have me curious.
Yeah. Running about an oz in my reservoir for the last 5k miles or so. Got rid of a low speed groan I started to hear after I upsized my tires. I don't think its actually printed on the bottle, but if you email liquimoly they'll tell you its fine to use in small quantities in PS systems.
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      03-11-2016, 08:03 PM   #20
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Quote:
Originally Posted by Shredicus View Post
Yeah. Running about an oz in my reservoir for the last 5k miles or so. Got rid of a low speed groan I started to hear after I upsized my tires. I don't think its actually printed on the bottle, but if you email liquimoly they'll tell you its fine to use in small quantities in PS systems.
Very interesting. Thanks for mentioning that. I might give it a try. I am a big fan of LM MoS2 as a general matter.
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      03-11-2016, 08:15 PM   #21
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Originally Posted by Hujan View Post
Very interesting. Thanks for mentioning that. I might give it a try. I am a big fan of LM MoS2 as a general matter.
As am I, and lately I've been checking out the more exotic EP additives for my oil. Originally ran MoS2 when I switched to 0w40 and it significantly slowed the oil consumption.

After that I tried a m1 0w40/5w50 blend with ceratec since my iron wear was showing a bit high from the switch to 0w40, and it had a positive impact on my wear numbers in my oil reports.

This last OCI I went with lubegard bio-tech since I was going to be storing it for 3+ months. Lubegard uses some kind of neato ester base and a nuclear moly formulation so it's claimed to never fall out of suspension as some reports indicate MoS2 will if left dormant for long amounts of time and lots of esters to keep the seals happy

This next OCI I've I'm going with straight M1 5w50 and Archoil's fascinating AR9100 nanoborate-ester compound. I'll report back on that once I've run it; I love all this shit
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      03-12-2016, 12:33 PM   #22
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Quote:
Originally Posted by Shredicus View Post
As am I, and lately I've been checking out the more exotic EP additives for my oil. Originally ran MoS2 when I switched to 0w40 and it significantly slowed the oil consumption.

After that I tried a m1 0w40/5w50 blend with ceratec since my iron wear was showing a bit high from the switch to 0w40, and it had a positive impact on my wear numbers in my oil reports.

This last OCI I went with lubegard bio-tech since I was going to be storing it for 3+ months. Lubegard uses some kind of neato ester base and a nuclear moly formulation so it's claimed to never fall out of suspension as some reports indicate MoS2 will if left dormant for long amounts of time and lots of esters to keep the seals happy

This next OCI I've I'm going with straight M1 5w50 and Archoil's fascinating AR9100 nanoborate-ester compound. I'll report back on that once I've run it; I love all this shit
You and me both! Was thinking of trying M1 5w50 myself. I fear 0w40 is too thin for track days in the summer. I wish Motul 300v came in a 5w- or 10w-50.
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Last edited by Hujan; 03-12-2016 at 03:48 PM.
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