Is this a hydro boost problem?
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Elder User
Joined: Dec 2003
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From: Wayne, PA
Is this a hydro boost problem?
I started my truck this morning. Not too cold. Anyway, as soon as I touched the brakes the truck started to moan. It also moaned when I turned the wheel.
Truck is an '02 with 114K Thanks Ben
Truck is an '02 with 114K Thanks Ben
Logistics Pro
Joined: Aug 2005
Posts: 3,886
Likes: 180
From: Morgan Hill, CA
Absolutely. I flushed mine at 100k, 150k, 200k, and 250k and this weekend finally replaced it after having a new pump on the shelf for about five years. I can now "test" the ABS again. Steering is better but not nearly as good as my dad's '02 which tells me I need ball joints again. Also my tread is low and that makes a big impact.
Use synthetic ATF. Mobil 1 works great, but others will too.
Use synthetic ATF. Mobil 1 works great, but others will too.
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Joined: Apr 2000
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From: NorCal
I flushed mine with Mobil 1 Synthetic as well.
The moan you're hearing can also be referred to as squalling. The simple explanation to that is, fluid passing around the vanes of your power steering pump. When it moans, have you checked the PS reservoir for foam? Also, have you done any steering without the engine running? Hopefully it's just old fluid, in which case the flush should help.
The moan you're hearing can also be referred to as squalling. The simple explanation to that is, fluid passing around the vanes of your power steering pump. When it moans, have you checked the PS reservoir for foam? Also, have you done any steering without the engine running? Hopefully it's just old fluid, in which case the flush should help.
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Elder User
Joined: Dec 2003
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From: Wayne, PA
I have not turned the wheel with the engine off.
I have not pulled the cap yet, but the level looked ok through the plastic.
I am not a mechanic by any means, but I do like to change the oil and other stuff like that myself. How difficult is it to flush? The write up made it look extremely easy. Also, how many quarts of fluid should I plan on buying?
Thanks for all of the help.
I have not pulled the cap yet, but the level looked ok through the plastic.
I am not a mechanic by any means, but I do like to change the oil and other stuff like that myself. How difficult is it to flush? The write up made it look extremely easy. Also, how many quarts of fluid should I plan on buying?
Thanks for all of the help.
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Posting Guru
Joined: Apr 2000
Posts: 1,345
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From: NorCal
I have not turned the wheel with the engine off.
I have not pulled the cap yet, but the level looked ok through the plastic.
I am not a mechanic by any means, but I do like to change the oil and other stuff like that myself. How difficult is it to flush? The write up made it look extremely easy. Also, how many quarts of fluid should I plan on buying?
Thanks for all of the help.
I have not pulled the cap yet, but the level looked ok through the plastic.
I am not a mechanic by any means, but I do like to change the oil and other stuff like that myself. How difficult is it to flush? The write up made it look extremely easy. Also, how many quarts of fluid should I plan on buying?
Thanks for all of the help.
Having a helper in the cab doing the steering/brake work while I refilled the reservoir made it really easy!
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Elder User
Joined: Dec 2003
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From: Wayne, PA
Update... I flushed the system with 2.5 quarts of Mobile 1 Syn ATF. Everything sounds normal but the brake seems a little harder. Maybe that is in my head, I have been driving a Jeep for the last couple of days. Total cost for fluid and clear hose $29. Not taking the truck to a mechanic. Priceless. Thank you for all of your help.
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Catfish Woody
Small Block V8 (221, 260, 289, 5.0/302, 5.8/351W)
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Jan 25, 2016 05:38 PM
2003, 73, 99, boost, f350, ford, forums, hydraboost, hydro, hydroboost, powerstroke, problem, problems, problims, truck
