Power steering pump whine

[LandCruiserPhil]

Not the Power steering pump but a whine?

My power steering pump started to whine today. WTF… Pump was rebuilt a few months ago, fluid flushed, and all hoses replaced except the high pressure hose which now has a slight leak (new hose in garage). The pump does not whine at ideal and does not get louder when the wheel is turned at ideal. Steering seems OK no resistance when the wheel is turned while driving. But as RPM increases so does the whine. Fluid (Dexron III) is clean and full. Any ideas?

 

[pound3151]

Downey Fabric Softner, C-Dan swears by it

 

[semlin]

I take it you are sure it is the p/s pump and not a drive belt.

If downey does not work, try changing out the fluid and maybe even going synthetic.

 

[elmariachi]

I have seen a couple do that and its often small air bubbles in the line. A drain and refill is a good option.

 

[landtank]

Downey Fabric Softner, C-Dan swears by it

an on going test in a 94 Camry says, "don't get your hopes up"

 

[landtank]

I rebuilt my pump before I got my glasses and put a few of those vanes in backwards. Ordered a new pump a few eeks later.


Wife road me like a rented mule for about a month after that one.

 

[cruiserman]

Check your wheel bearings.

 

[LandCruiserPhil]

Got the wife and daughter involved and the consensus is it’s not the P/S pump. No matter what you do to the steering you cannot get the sound to change. So for right now the P/S pump is out. Wife says it sounds like bad bearings in the alternator (it is that type of high pitched sound kinda like some superchargers sound), daughter says that’s not where the sound is coming from. So I used the IdahoDoug funnel and hose tool and it doesn’t sound like it coming from the alternator. It sounds like it coming from the crank pulley area. So for right now I’m just lost. Its getting cold (48degrees ) and dark so tomorrow I plan on pulling off all the belts and see what I get. I have been told that the engine will run without the belt on the supercharger…we will see.

Sprayed all the pulleys no sound change.
Check alternator output (14.45) and sprayed the piss out of it with WD40 - no change
At ideal no noise (at least I cant hear it). Loudest at 2400 rpm seems to go away at high rpm (4000)

 

[Docmallory]

Its getting cold (48degrees )

Fan clutch?

 

[landtank]

belt tensioner pulley bearing or aftermarket belts. I'd be more possitive if you gave us the mileage on the truck.

 

[LandCruiserPhil]

belt tensioner pulley bearing or aftermarket belts. I'd be more possitive if you gave us the mileage on the truck.

Sounds like a good call. I check in the AM

96 FZJ80 Mileage 110k
All OEM belts 25k
Belt tensioner - original
supercharger pulley 35k
supercharger belt Gates 9k

 

[reffug]

Its getting cold (48degrees )

I think Doc was already getting at this point.......


But you can't be serious?.......

 

[miked]

Downey Fabric Softner, C-Dan swears by it

this has got to be one of the craziest things i have ever heard.
i googled this but could find no other reference to putting fabric softener in a hydraulic pump. can someone please explain the logic of this?

 

[semlin]

try removing the s/c belt and see what happens. your oem belts are also getting a little long in tooth so I would also replace them before messing with the pulley. When I first got my truck a mechanic used a listening tool and was certain the whine came from the pulley but he was wrong.

 

[semlin]

this has got to be one of the craziest things i have ever heard.
i googled this but could find no other reference to putting fabric softener in a hydraulic pump. can someone please explain the logic of this?

oh yeah,

read this and weep downey is an approved BMW service aid for p/s


http://www.bmw-forums.com/forum/index.php?s=&showtopic=12732&st=

 

[LandCruiserPhil]

No more whine! Removed the supercharger belt, still had the whine but the engine runs fine without it. Revs a little slower but now I know if the belt breaks I'm not fawked. Removed the A/C belt and no more whine. A/C compressor is fine so I removed the A/C belt tensioner pulley. Removed the seal bearing from the pulley and carefully disassembled the "sealed" bearing. Inside the bearing was dry but not 100% so I Cleaned, inspected it, repacked with Mobil 1, and reassembled. Everything is normal again.

Thanks to everyone for the ideas.
Trouble shooting points go to Landtank

 

[Lockd97]

Fyi

Just a friendly FYI as far as the supercharger is concerned. If for any reason you do not want boost( for any reason) all you need to do is get a zip tie and put it on the bypass diafram arm so it will not close. I did this to tune my Tacoma's fuel curve in non-boost to nail the LT and ST fuel trims.

 

[Tools R Us]

Most of the time the bearing is a 6202UU, I have them in stock, about $6.00. You packed to much grease! they take about 15% filled, it will run hot until it slings out the excess grease.

 

[LandCruiserPhil]

Most of the time the bearing is a 6202UU, I have them in stock, about $6.00. You packed to much grease! they take about 15% filled, it will run hot until it slings out the excess grease.

Tool R Bearing, add one on to my existing tool order.

 

[Proven]

I hate to drag this thread back up, but after using "SEARCH" I found it. I have the same squeel sound (maybe not the same cause).

My question about this particular thread was this "LandCruiserPhil Did you hear the noise even with the AC off?" Does our AC pump stay on even if the AC is off?

Mine is happening at idle, in gear and out of gear, in neutral, and parked. So that made me feel better about the trasmission and the transfer case. So it is in the engine bay and the pulleys are the first point of contention. So revving the engine in neutral/park yeilds a squeel and when in gear driving it changes pitch with the shift and load, really gets piercing when I floor it.

So, I was curious about your fix, because that would save me a LOT of time.