Steering At idle IMPOSSIBLE?????? - Ford Powerstroke Diesel Forum
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Old 08-09-2010, 08:51 AM
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Steering At idle IMPOSSIBLE??????

I have a 2005 f-250 4x4 diesel with a 6 inch lift and 35 inch toyo a/ts with 60 psi in them.i cant turn the wheel at an idle on dirt or street , in neutral with out my foot on the brake it just doesnt turn. I have a ported hydro boost agr ps pump and a ford factory ps box. I have been fighting this issue for over a year now, all joints are free and all links are good the truck has 40k on it. I need some ideas bc i cant deal with it anymore. I work at a lifted truck dealership with 2005 - 2007 ford diesel with bigger lifts and tires that turn no problem.
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Old 08-09-2010, 09:05 AM
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your pump is weak, agr is know for this, i went through 4 of them before i went with a full psc kit..
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Old 08-09-2010, 09:08 AM
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i just had the agr replaced last week with a replacement from agr but i have always had this problem with every ps from ford ro reman.
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Old 08-09-2010, 09:13 AM
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best way to find out if the pump is weak is to put the truck on jack stands press the brakes has hard as you can an steer lock to lock at the same time ,it should put strain on your pump, but you should be able to steer still, if it feel like you have no powersteering it the pump.. if it steers fine with the brakes pushed it may be the box..

i ran a agr box pump an ram for a few years before i went with psc full hydro
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Old 08-09-2010, 09:20 AM
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I have tried that it still turns. I actually just spoke to psc a min ago and they said i need a ram but i have never seen any ford out there with a ram beside trucks with 44s and up every one here hasnt had an issue with the 100s of superdutys ive driven here not one had an issue im so lost
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Old 08-09-2010, 09:39 AM
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My black truck on stock tires did the samething as yours, its a 1 in a millon thing but you must have got lucky like me.. try a full kit, pump lines ram an box. it has got to steer after that..

i had to go with psc's full kit, billet pump , lines, pump mount, steering valve an upgraded hydro boost.
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Old 08-09-2010, 09:43 AM
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what else would cause this bad lines?
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Old 08-09-2010, 09:51 AM
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im not sure. but my kit came with bigger lines for all of the hydro boost. along with the lines to the box an pump.. the billet pump flows way more so it needed the bigger lines..
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Old 08-09-2010, 10:01 AM
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I have changed everything you would think something would have worked. is there any check valves or something wierd in the lines that could get clogged? I need a diagram of the system.
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Old 08-09-2010, 10:10 AM
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Have you tried just revving past idle?
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