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5.4l power steering flush questions?

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Old Sep 23, 2009 | 02:26 PM
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5.4l power steering flush questions?
I have a 05 f250 with a 5.4l
I have seen lots of instructions on here for doing a power steering flush with diesels, but the setup is not the same on the motors.
Wondering if anyone has some instructions on the 5.4?
 
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Old Sep 23, 2009 | 02:29 PM
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You probably seen the instructions for diesel engines which have hydraboost and the gas engines do not. You should follow the steps in this thread instead.

https://www.ford-trucks.com/forums/6...intenance.html
 
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Old Sep 23, 2009 | 02:39 PM
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Thank You. Which of the two small return lines do i drain from?
 
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Old Sep 23, 2009 | 03:03 PM
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It's the smaller line that goes to the reservoir. That's the line you will need to pull.
 
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Old Sep 23, 2009 | 03:04 PM
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Perfect thanks bud!
 
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Old Sep 23, 2009 | 07:50 PM
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I just finished the flush and every so often i get a random grinding noise kind of high pitched. the p/s fluid is bled, not bubbly or milky in the resv.... answers?
 
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Old Sep 23, 2009 | 08:52 PM
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Does the sound only happen when turing the steering wheel? Are you sure he fluid level is right?
 
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Old Sep 23, 2009 | 10:35 PM
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Fluid level is perfect, sound only happens 2 of 30 full turns, or when backing uphill while turning wheel 1/2 turn or so.
 
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Old Sep 24, 2009 | 06:42 AM
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Is it a PS pump whine or a metal on metal grind?
 
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Old Sep 24, 2009 | 08:08 AM
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its not a whine i know that for sure, but i dont know how there could be a metal on metal grind with it bled and full
 
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Old Sep 24, 2009 | 08:47 AM
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I don't have any more good ideas. It could be anything from the pump, to steering box, to somthing in the drag link or tie rods. Any idea where the sound is coming from?
 
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Old Sep 24, 2009 | 04:22 PM
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i think it has to be either the steering box or the pump.
 
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Old Sep 24, 2009 | 07:56 PM
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If it wasn't there before, you may well just have a little air in the lines still. If it goes away in a couple days, you'll know for sure. Other thing you can do is pull a vacuum on the PS resevoir to draw air out. Would work better with it running.
 
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Old Sep 24, 2009 | 10:00 PM
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well i just re did the whole flush and it is working so far...there must have been air in there but i will know for sure tomorrow
 
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Old Sep 24, 2009 | 10:11 PM
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Drive to a gravel road and turn it lock to lock about 5 times with your foot off the brake.
 
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