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The problem is the power steering hydraulic pump requires quite a bit of power just to circulate fluid around the system when you are not needing any power assist. It actually takes very little hydraulic power to use "power steering" to move the wheels to the left or right when sitting still.
When driving along down the road the power steering takes up to 1 horsepower just to circulate the fluid, when its not even doing anything as far as you are concerned. Then when you need it the power steering only takes around 2 horse power to run the pump its self to push the rack or steering arm one way or the other.
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1984 chevy suburban, custom made 6.5L diesel turbocharged with a Garrett T76 and Holset HE351VE, 22:1 compression 13psi of intercooled boost.
1989 firebird mostly stock. Aside from the 6-speed manual trans, corvette gen 5 front brakes, 1LE drive shaft, 4th Gen disc brake fbody rear end.
2011 leaf SL, white, portable 240v CHAdeMO, trailer hitch, new batt as of 2014.
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