Power steering whine Please help!!

OZONE · 11-06-2005, 03:01 AM

I have a '90 4runner v6 4x4, auto. I have just replaced the power steering pump, and I have a god awfull whine comming from the pump. Not only when I steer but when the brakes are aplied too. whats causing this? Its like I have the wrong fluid in or something. I'm using the factory recomended Dexron III. When I 1st installed the pump it was doing it so I got a exchange for another and still the same thing happens. Anybody have any sudgestion. Its driving me crazy. Thanks

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SteveO · 11-06-2005, 07:07 AM

Did you get all the air out of the system. It takes a while. In the manual there is a method to getting the air out of the system, and making sure you have enough fluid. The only time my PS pump whined is when I didn't have enough fluid. Even now with 37" tires, I don't hear any complaining from the PS pump.

4Crawler · 11-06-2005, 08:56 AM

I use the bleeding instructions here:
- http://howeperformance.com/bleedinginst.html

And likely you have ABS brakes and the ABS actuator is powered off of the power steering pump via lines off of the steering box.

OZONE · 11-06-2005, 01:25 PM

OK I'll try that, I thought I bleed the system good with the tires off the ground but I didnt do it this way. It looks like I didnt have the right fluid either, so I'll flush that out to. Thanks guys

4Crawler · 11-06-2005, 01:42 PM

For an all-Toyota system, ATF is the proper fluid.

OZONE · 11-06-2005, 11:27 PM

I'm have valovoline dexron III in right now and Ill try to bleed it out again tommorow. I'll post up my results.

OZONE · 11-07-2005, 11:43 AM

Well I went threw the bleeding process again and the fluid looks perfect and no whining. YAY!!! But its at operating tempeture. We see tommorow when its cold how it does. Thanks guys!!!

11-06-2005, 07:07 AM	#2 (permalink)
SteveO Contributing Member Join Date: Oct 2002 Location: NM Posts: 1,848	Did you get all the air out of the system. It takes a while. In the manual there is a method to getting the air out of the system, and making sure you have enough fluid. The only time my PS pump whined is when I didn't have enough fluid. Even now with 37" tires, I don't hear any complaining from the PS pump. __________________ http://www.Hunt4Steve.com In the span of time, life is short. Our life is like a wave on the ocean, a flower in the field, here today and gone tomorrow. Know yourself, know where you will spend eternity, for NOTHING else will matter when you die.

11-06-2005, 08:56 AM	#3 (permalink)
4Crawler Contributing Member Join Date: Jun 2002 Location: SF Bay Area, CA Posts: 7,828	I use the bleeding instructions here: - http://howeperformance.com/bleedinginst.html And likely you have ABS brakes and the ABS actuator is powered off of the power steering pump via lines off of the steering box. __________________ 1985 Toyota 4Runner SR-5, 22REC engine, dual t-cases, 4.88 gears, dual ARBs, 33x10.50 BFGs or 35x12.50 MTRs r.c.brown@ieee.org TruckEditor@tlca.org Project: 4Crawler 4Crawler OffRoad Gettin'Off 4WD Club

11-06-2005, 01:42 PM	#5 (permalink)
4Crawler Contributing Member Join Date: Jun 2002 Location: SF Bay Area, CA Posts: 7,828	For an all-Toyota system, ATF is the proper fluid. __________________ 1985 Toyota 4Runner SR-5, 22REC engine, dual t-cases, 4.88 gears, dual ARBs, 33x10.50 BFGs or 35x12.50 MTRs r.c.brown@ieee.org TruckEditor@tlca.org Project: 4Crawler 4Crawler OffRoad Gettin'Off 4WD Club

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11-06-2005, 01:25 PM	#4 (permalink)
OZONE Registered User Join Date: Aug 2005 Posts: 4	OK I'll try that, I thought I bleed the system good with the tires off the ground but I didnt do it this way. It looks like I didnt have the right fluid either, so I'll flush that out to. Thanks guys

11-06-2005, 11:27 PM	#6 (permalink)
OZONE Registered User Join Date: Aug 2005 Posts: 4	I'm have valovoline dexron III in right now and Ill try to bleed it out again tommorow. I'll post up my results.

11-07-2005, 11:43 AM	#7 (permalink)
OZONE Registered User Join Date: Aug 2005 Posts: 4	Well I went threw the bleeding process again and the fluid looks perfect and no whining. YAY!!! But its at operating tempeture. We see tommorow when its cold how it does. Thanks guys!!!