Power Steering and Brakes went out?? - Ford Powerstroke Diesel Forum
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Old 04-14-2011, 02:43 PM
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Power Steering and Brakes went out??

I have a 2001 F350 with the 7.3 and I just had to replace my power steering pump about 2 months ago. Well today my power steering and brakes went out on me and I almost wound up in a bank....and not in a good way...

Any idea what would make them both go? Could it be the Hydroboost? Or the new pump?

It built up some pressure because the lid was almost pushed off the pump and it was full of fluid??

Any ideas?

Thanks in advance....
Jason
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Old 04-14-2011, 03:04 PM
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That Power Steering Pump is running them both,,,, any whine from it?
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Old 04-14-2011, 03:16 PM
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No whine.... even with the truck running and hood up standing by it...
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Old 04-15-2011, 08:56 AM
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I am assuming it's not the hydro boost because it is affecting brakes and steering.... so it would have to be a line or the pump I am guessing...

Anyone have another opinion?
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Old 04-15-2011, 09:47 AM
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no opinion, but mine is doing the same thing only not all the time. it comes and goes
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Old 04-16-2011, 04:38 AM
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Had one guy tell me that if the hydro boost goes out you have no brakes or steering?

Anyone know about that?
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Old 04-16-2011, 07:19 AM
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Called a dealer and talked to a diesel mechanic....

He said this problem usually means you have air in the system. Said if a hose has a hole, cut, rupture, has been pinched, etc. that it will suck air into the system and the air will cause fluid to push back into the reservoir... He said it's usually not the hydro boost though... He said start by checking the lines, then pump....?
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Old 07-15-2011, 07:56 PM
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the power steering pump runs the power brakes on a hydroboost setup. we use them in cars we build with bigger cams that dont pull very good vacuum. i would think thats a good place to start
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Old 07-16-2011, 02:50 PM
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yep i would check the pump, sounds and most likely is the problem.. best way is to start truck and remove cap off of pump see if fluid is "circulating" if not theres your problem.. had the same problem on my wifes Yukon the shaft broke but was still in place turning but no circulation of fluid and yes VERY scary.
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