Strange sound from the power steering and brakes - Ford Powerstroke Diesel Forum
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post #1 of 6 Old 04-27-2007, 12:05 PM Thread Starter
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Strange sound from the power steering and brakes

2001 Ford Excursion 7.3L Powerstroke
221K Miles
Two Wheel Drive
Fresh brakes 10K miles ago...

I'm getting a very loud low pitch whine with a mild vibration whenever I hit the brakes or turn the steering wheel. I'm guessing it has something to do with my hydraulic system but I'm embarrased to admit that I have no clue how to check that system...

Anybody got a sec to help me out?

Thanks,
Joshua

---------------------------
Red Wagon Trucking
Houston, Texas

2002 Ford F-350 Crew Cab 4x4
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Ok, so maybe I went a little overboard

Last edited by JWimberley; 04-27-2007 at 12:26 PM. Reason: Add vehicle details
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post #2 of 6 Old 05-03-2007, 09:27 AM
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Checked fluid level in pump? (next to driver side IC tube)
Tom

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Black 1999.5 F250SD XLT AUTO 4x4 reg. cab(6/99), Pre-pump & Tank Mods, AFE Intake, Racor Filter/Separator, HX Mod, ZooDad, WW, Power-pedal Mod, Pop-up gooseneck ball,Brush Guard, 3.5" lift, BFG Commercial AT tires (265/75), 65hp ATS chip, and #2 cologne. Ball joints replaced, and thinking about a BTM and shocks....!

Drain valve repair write-up.
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post #3 of 6 Old 05-03-2007, 10:48 AM Thread Starter
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Fluid level was the problem, that power steering pump fill was pretty well hidden! Thanks for the help!

---------------------------
Red Wagon Trucking
Houston, Texas

2002 Ford F-350 Crew Cab 4x4
Rancho 4" Lift
Superchips Programmer
Maverick Steel Bumpers, Running Boards & Headache Rack
Air Raid Filter System
T-409 Turbo Back 4" Exhaust 5" Chrome Tip
Really Pretty Wheels with 315/75/R16 BFG's
Pioneer AVX-P7300DVD with XM Satellite, Television Tuner and soon Voice Commander
Tons and tons of Bio-Diesel...

Ok, so maybe I went a little overboard
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post #4 of 6 Old 05-09-2007, 11:39 AM
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ok, my level is sufficient, but i get the whine and it almost locks up at times when at slow parking speeds, does that mean a pump replacement?
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post #5 of 6 Old 05-09-2007, 01:38 PM
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Pump could be getting weak.. It might not be a bad idea to try changing the fluid first, some have noted improvement with new fluid, others swear by synthetic.. I usually draw as much out of the pump as I can with a turkey baster and fill back up at every oil change, keeps it fairly fresh, never had a problem.
Tom

---------------------------------------------
Black 1999.5 F250SD XLT AUTO 4x4 reg. cab(6/99), Pre-pump & Tank Mods, AFE Intake, Racor Filter/Separator, HX Mod, ZooDad, WW, Power-pedal Mod, Pop-up gooseneck ball,Brush Guard, 3.5" lift, BFG Commercial AT tires (265/75), 65hp ATS chip, and #2 cologne. Ball joints replaced, and thinking about a BTM and shocks....!

Drain valve repair write-up.
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post #6 of 6 Old 05-09-2007, 02:57 PM
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if your fluid gets to low it can force air bubles into your PS lines and steering box this is verry messy but ive had it work before... get plenty of extra PS fluid and put a drain pan under the pump to catck all the over flow... with the truck running have some one steer the truck left to right (lock to lock) while just pouring a steady stream into the pump forcing it to over flow... yeah I know it sounds crazy but I had a mid 90's and a seal went out in my steering box and after i replaced my seal I had that horible whine untill i did the flush thingy LOL no kidding!



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