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Just an update.. I got the whine back, but I got it during the summer. The PSF contaminant load was pretty high. Did a full drain and fill. Then another, used about 3 bottles of PSF and the whine went away.
If you haven't changed your PSF in a while, I definitely suggest doing so. Super easy, just get the right size tubing to insert in the return line. I can't remember what size I used.. I want to say 1/4" but don't quote me. I have various sizes of tubing in the garage.. and the tubing to the MDX was different than the TL.
Take a turkey baster and suction as much as you can out of the reservoir. Then insert return line with tubing into a bottle catch (at least 40 oz bottle with neck to keep it from splashing out). Remember to turn lock to lock a couple of times to drain as much as you can out, but not to the point that you're burning up the pump while it's dry (easier if you put the front wheels up). When you refill, fill it to max, turn lock to lock, turn car off, let it settle and pour again. I suggest doing 2 drain and fills to maximize the clean fluid in the system, otherwise plan another drain and fill by next season.
I plan on trying to tackle this job this weekend (O-ring and fluid replacement).
How much fluid should I need to flush the system? Also, is Honda fluid recommended or is any PS fluid acceptable? EDIT: Did some reading. Honda it is!
Also, please bear with me. To drain via the return, is that just the top hose on the reservoir? So just unclip the hose, stick the smaller hose in the hose, and then run the car/pump?
I plan on trying to tackle this job this weekend (O-ring and fluid replacement).
How much fluid should I need to flush the system? Also, is Honda fluid recommended or is any PS fluid acceptable? EDIT: Did some reading. Honda it is!
Also, please bear with me. To drain via the return, is that just the top hose on the reservoir? So just unclip the hose, stick the smaller hose in the hose, and then run the car/pump?
For one drain and fill, 2 bottles of Honda PSF (you'll use ~1.5 bottles).
Yep. You should be able to suck enough out of the top with a baster to minimize fluid leakage from removing the return line, but you should still put something on the fender and above the belts to keep PSF from leaking on it. I suggest buying a new res or at least removing the res and cleaning it out. The bottom of the res has a small catch that gunk / heavy materials tends to settle.
LOL...Maj, you bone stock on your TL? You got me thinking about it after your comment about not lowering anymore yesterday. I wonder if I'll ever outgrow the desire to complicate my life by making my mommy car a mommy racecar.
For one drain and fill, 2 bottles of Honda PSF (you'll use ~1.5 bottles).
Yep. You should be able to suck enough out of the top with a baster to minimize fluid leakage from removing the return line, but you should still put something on the fender and above the belts to keep PSF from leaking on it. I suggest buying a new res or at least removing the res and cleaning it out. The bottom of the res has a small catch that gunk / heavy materials tends to settle.
Thanks so much! Picture makes perfect sense
I was considering getting the reservoir anyways. Does the part #53701-SDA-A01 seem right?
I wouldn't use trans fluid. I'd just stick to honda PSF to be safe. There was a well known member here who went through 3 racks in one year. You can definitely use a transfer pump instead of a turkey baster.
You also don't have to rev it when turning lock to lock.. and yes, make sure the res is secure. Happens more often then one would think. Even happened to some experienced and knowledgeable members whose names shall not be spoken..
LOL...Maj, you bone stock on your TL? You got me thinking about it after your comment about not lowering anymore yesterday. I wonder if I'll ever outgrow the desire to complicate my life by making my mommy car a mommy racecar.
bruh.. because not race car.
I had a cb7 accord that was 3 inches off the ground.. fucking lower than a vette. I had a camber kit, neg camber in the rear, lots of nice mods, tastefully done. It was a fun car, but I'm definitely past all that.
Just did the job. Super easy quick. They O-ring honestly looked fine. It looked and felt identical to the one I was replacing it with. No cracking or anything. Next part was draining the reservoir. My fluid was DIRTY! It honestly should have been changed long ago. the bottom of the reservoir felt like a beach. Fluid was pretty much black. I bought 3/8 hose to find it out is too small. It sort of worked. I put about 6 inches of the 3/8" hose into the return line, and then put the spring clamp to add a tiny bit of pressure. I also wrapped it with a shop towel to catch whatever would probably leak. the fluid that was pumped out still had quite a bit of grit to it. I honestly wish I had more fluid to circulate, cause what was coming up was pretty nasty still. I installed the new reservoir, filled it, then ran it to get rid of the air. I had to fill as my wife was turning the wheel or else it would have went dry. the pump still kind of groans when I turn it, but it sounds better. Honestly though, I need to flush it again. I used my turkey baster to see the color of the "new" fluid, and it was pretty dark again, no where near the almost clear fluid I put in. Ill probably grab another 2 bottles and give it another shot.
First of all, thanks for this awesome help! The dealership wanted $300 to "rebuild the pump" and I cried, "Extortion!" While getting the new orange o-ring at the Honda parts desk, they suggested I also replace the o-ring in the top too.
So far, I've successfully replaced that one, but the bolt on the inlet hose is on so tight I can't get it loosened. I tried buying a new wrench too, but I just can't seem to get the wrench seated over the bolt. I looks like the bolt is already showing some wear and I'm afraid I'm going to strip it if I keep monkeying with it myself. I hate to admit defeat, but what should I do now?
already took it in for the recall when it was first annouced.....it still does the noise. plus i no longer have warranty
same here. I bet they didn't replace the o-ring. I have the worst whine in the world, and the hose is shiny from all of the fluid that has leaked out over time in this exact area.
I admit, I did not go through all the posts.
Later posts seem to be about the noise coming back or something.
Not sure if anyone suggested before me, but there actually two o-rings. One on the top, and one on the bottom of the pump. Replace both. They are not the same either. They have different part numbers.
I did replace both and noise is no more. It is really a bitch to get to the bottom o-ring.
Had to go a buy a wrench with low profile just to be able to get it on the bolt.
I apologize if this is already been answered, but can you buy the same size o ring at Autozone/Advance or do you have to get the specific part # 91345-RDA-A01?
Also, there is a bit of dried, leaked PS fluid on the hose near the ring location. Any recommendations of a way to clean it off?
I admit, I did not go through all the posts.
Later posts seem to be about the noise coming back or something.
Not sure if anyone suggested before me, but there actually two o-rings. One on the top, and one on the bottom of the pump. Replace both. They are not the same either. They have different part numbers.
I did replace both and noise is no more. It is really a bitch to get to the bottom o-ring.
Had to go a buy a wrench with low profile just to be able to get it on the bolt.
Hi, New to this forum but ran acrross this thread. I have an 05 MDX with127,000 miles with the whining sound only during cold weather. Bought the orings and had Pep Boys replace them two days ago. Whining still there, as bad as ever. I think the mechanic told me to flush the PWS a couple of times and that should help. Being that the car is 127K, should I just give up and replace the PSP? Thanks!
Just wanted to give a shout out to this place and thread. 07' TL with 94k started moaning/whining noise on way home from work Tuesday in 18 degree weather. Looked the issue up here and found this thread. Went to Acura Dealer and picked up the O-Ring for 84 cents and two bottles of PS fluid to do a flush when the weather warms this weekend to 50!
Anyway, changed the O-Ring out last evening, takes maybe 10 minutes if you take your time, otherwise easily a 5 minute change. Results were immediately noticeable and this morning on way to work (24 degrees) the noise is gone completely.
Thought for sure my PS unit was going out and I was looking at $500 or more to replace it.
Update. Ghanges oring, noise still three. Flushed PS today, fluid was black like coffee. Replaced with new Honda fluid, so far so fios, but it was warm today.
Do you guys take the belt out to reach the oring Bolt? I tried today with a 10mm flat wrench and could Not reach it. Is three a way to take the pulley out of the PS pump?
Sorry, spellcheck fail above and I cant find the edit button. I had the inlet o-ring replaced as suggested, had it done by Pep-boys since I could not remove the 10mm bolt myself. They however did not replenish the reservoir as they do not carry Honda PS Fluid. The noise did not go away during cold weather.
Checked the fluid and it was dark black. Flushed it out yesterday and replenished with new fluid. So far so good. It hasnt been cold yet, but it already feels better. I think bad fluid may have contributed to the pump whining noise, not sure. We'll see the next cold front.
Flushed it out yesterday and replenished with new fluid. So far so good. It hasnt been cold yet, but it already feels better. I think bad fluid may have contributed to the pump whining noise, not sure.
It sometimes takes a couple of days of driving to get the air out of the PS system after changing the fluid and O-ring, so I wouldn't worry much if there was still a little noise the next day.
Wife's MDX has intermittent noisy p/s. Just picked up 2 bottles Honda p/s fluid and the high pressure line o-ring. Even guy at dealer parts counter said they change fluid and o-ring before changing the pumps because it usually solves the issue. I am hoping it is the fix.
It's not the air in the system causing the noise, it's the whistling past a dry o-ring. Once you lube and change it, your system should be quiet...once you go lock to lock to burp the system...it should be relatively air free.
That is my understanding based on my limited knowledge of bacon.
First of all, thanks for this awesome help! The dealership wanted $300 to "rebuild the pump" and I cried, "Extortion!" While getting the new orange o-ring at the Honda parts desk, they suggested I also replace the o-ring in the top too.
So far, I've successfully replaced that one, but the bolt on the inlet hose is on so tight I can't get it loosened. I tried buying a new wrench too, but I just can't seem to get the wrench seated over the bolt. I looks like the bolt is already showing some wear and I'm afraid I'm going to strip it if I keep monkeying with it myself. I hate to admit defeat, but what should I do now?
Get a wrench like the one I used. I almost always recommend using a 6 point socket / wrench, but for a tight job like this.. a 12 point might be better. Just make sure it's the right size and is over the bolt completely. You could also fit an angled/flex socket.
Originally Posted by Marlon
and the whine is back..... this thread needs a bump.
If it's whining all the time, check the fluid.. (check my post quoted below).. otherwise swap out the o-ring again.
Originally Posted by blkmz3
my whine is back as well and I did the O-ring replacement 2 yrs ago.
ditto
Originally Posted by hot_ice1027
Hello,
I admit, I did not go through all the posts.
Later posts seem to be about the noise coming back or something.
Not sure if anyone suggested before me, but there actually two o-rings. One on the top, and one on the bottom of the pump. Replace both. They are not the same either. They have different part numbers.
I did replace both and noise is no more. It is really a bitch to get to the bottom o-ring.
Had to go a buy a wrench with low profile just to be able to get it on the bolt.
The lower valve o-ring might be a culprit, but 90% of the time it's just the inlet o-ring.
Originally Posted by gogators22
I apologize if this is already been answered, but can you buy the same size o ring at Autozone/Advance or do you have to get the specific part # 91345-RDA-A01?
Also, there is a bit of dried, leaked PS fluid on the hose near the ring location. Any recommendations of a way to clean it off?
Get OE.. it's less than $1. No brainer.
Originally Posted by DavidR76
Hi, New to this forum but ran acrross this thread. I have an 05 MDX with127,000 miles with the whining sound only during cold weather. Bought the orings and had Pep Boys replace them two days ago. Whining still there, as bad as ever. I think the mechanic told me to flush the PWS a couple of times and that should help. Being that the car is 127K, should I just give up and replace the PSP? Thanks!
Do fluid first.. if no go, you could rebuild the pump. But for $50.. with no core exchange and lifetime warranty.. worth just replacing the pump. I ended up replacing the pump on my MDX this year. I rebuilt it 4 years ago and it was well worth it. I might rebuild it again, just didn't have time to do it. The pumps from Advance / Autozone, etc are rebuilds themselves with cheapo spray paint. You can look at the sprayover and see that many of them didn't even clean the pumps, they sprayed over dirt.
Just make sure the pump has new o-rings and seals and cleanup some of the sprayover where the hp line seals with the pump and any add'l areas. It should last a couple of years at least, and if it goes out, bring it in and you get a new one for free. P/S pump replacement is easy. Only tricky thing is removing the pulley. I can advise you on that if you want a DIY. Let me know.
Originally Posted by DavidR76
Update. Ghanges oring, noise still three. Flushed PS today, fluid was black like coffee. Replaced with new Honda fluid, so far so fios, but it was warm today.
Do you guys take the belt out to reach the oring Bolt? I tried today with a 10mm flat wrench and could Not reach it. Is three a way to take the pulley out of the PS pump?
Don't need to touch the belt or pulley to replace the o-ring.
Originally Posted by DavidR76
Sorry, spellcheck fail above and I cant find the edit button. I had the inlet o-ring replaced as suggested, had it done by Pep-boys since I could not remove the 10mm bolt myself. They however did not replenish the reservoir as they do not carry Honda PS Fluid. The noise did not go away during cold weather.
Checked the fluid and it was dark black. Flushed it out yesterday and replenished with new fluid. So far so good. It hasnt been cold yet, but it already feels better. I think bad fluid may have contributed to the pump whining noise, not sure. We'll see the next cold front.
Could definitely have been a mixture of shit fluid and bad o-ring. Check my post below where the fix was related to oxidized PSF with a high contaminate load.
Originally Posted by Will Y.
It sometimes takes a couple of days of driving to get the air out of the PS system after changing the fluid and O-ring, so I wouldn't worry much if there was still a little noise the next day.
Welcome to AZ.
It should mostly be gone by the first day if it was the o-ring. Definitely by the second start up and drive, it should be gone if it was only the o-ring. Otherwise do a full drain and fill of PSF.
Originally Posted by rockstar143
It's not the air in the system causing the noise, it's the whistling past a dry o-ring. Once you lube and change it, your system should be quiet...once you go lock to lock to burp the system...it should be relatively air free.
That is my understanding based on my limited knowledge of bacon.
It is air in the system causing the moan.. air is seeping in past the o-ring into the pump. O-ring.. oxygen ring, air, pump, bacon. Just as Will stated, the moan could be there the next startup, because the air is still in the system. It needs to work it's way out through circulating back out the res, which could take 2 drives.
Originally Posted by Majofo
Just an update.. I got the whine back, but I got it during the summer. The PSF contaminant load was pretty high. Did a full drain and fill. Then another, used about 3 bottles of PSF and the whine went away.
If you haven't changed your PSF in a while, I definitely suggest doing so. Super easy, just get the right size tubing to insert in the return line. I can't remember what size I used.. I want to say 1/4" but don't quote me. I have various sizes of tubing in the garage.. and the tubing to the MDX was different than the TL.
Take a turkey baster and suction as much as you can out of the reservoir. Then insert return line with tubing into a bottle catch (at least 40 oz bottle with neck to keep it from splashing out). Remember to turn lock to lock a couple of times to drain as much as you can out, but not to the point that you're burning up the pump while it's dry (easier if you put the front wheels up). When you refill, fill it to max, turn lock to lock, turn car off, let it settle and pour again. I suggest doing 2 drain and fills to maximize the clean fluid in the system, otherwise plan another drain and fill by next season.
Well I just finished a day on the wife's acura MDX (2008 with 85,000 miles). Same exact set up as the TL on the p/s.
It was nasty dirty, looked like bottle of soy sauce. Changed the o-ring as well since a $2 part from the honda dealer. I used a wrench from my ignition wrench set and it fit perfect, not a lot of room for my billie bob hand in there. The old seal didn't seem bad. I put the return hose in a water bottle and emptied the system engine running turning wheel side to side until fluid stopped flowing. I refilled system and drove it. Came back and it was just as dirty. Grabbed 2 more bottles fluid from the dealer and flushed it again. It resembles clean fluid finally. When the weather dips again in a few days I will see if the wife has trouble with the p/s whining or not. It was 50* in chicago toady so perfect day to knock out garage work. Dealer charged $5.99 a bottle for fluid. Did oil change, cabin filter, detailed engine compartment and p/s job, safe to say few hundred dollars saved I am guessing.
07-30-2014, 02:45 PM
