Power Steering works only at higher RPM - Team Camaro Tech
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post #1 of 5 (permalink) Old Mar 8th, 10, 01:34 PM Thread Starter
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Tom
 
Join Date: Jun 2005
Location: Dallas Texas
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Power Steering works only at higher RPM

Same deal everything is brand new. My P/S only turns easy after the RPM gets up to 1000 or more. So at a idle like trying to park the car you have to muscle the steering wheel to get the car to turn. But driving the car down the street you can steer it with 1 finger. Thanks Team Camaro
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post #2 of 5 (permalink) Old Mar 9th, 10, 06:40 AM
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Join Date: Jan 2004
Location: Saginaw, Michigan
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Re: Power Steering works only at higher RPM

You say that everything is new so we should be able to dismiss that fact that your pump is old and tired and just isn't putting out flow like it used to.

There are different models of Saginaw pumps. They all look the same on the outside but different rings, rotors, and vanes inside the pump dictate how much fluid is displaced with every revolution of the pump driveshaft. It is possible that you just have a low displacement Saginaw pump that is just not putting out sufficient flow at low engine rpms that you experience at parking speeds. I would suggest checking with your source where you purchased the pump to see if they have any specs.

Also, the size of the power steering pump pulley versus the size of the crankshaft pulley can have a direct affect upon how much fluid is being pumped through the circuit. I have seen "power saving" pulleys that cause the pump to spin too slowly at parking situations.

Jim
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post #3 of 5 (permalink) Old Mar 25th, 10, 06:16 AM
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Dave
 
Join Date: Oct 2005
Location: Rhode Island
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Re: Power Steering works only at higher RPM

Loose or slipping belt..................

Dave F. in Rhode Island
'68 Camaro SS Accel DFI 454 (SOLD - I'm a boring Corvette owner now)
Bought my first big-block Chevy in 1970
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post #4 of 5 (permalink) Old Mar 25th, 10, 07:36 AM
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Location: Canada
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Re: Power Steering works only at higher RPM

Put the front end up on jacks, and try the steering without power. Could be something binding in the steering assembly?

capt

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I'm QUALIFYING!
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post #5 of 5 (permalink) Old Apr 4th, 10, 05:12 AM
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Brian
 
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Re: Power Steering works only at higher RPM

I would check your pulleys too. Underdrive pulleys do things like this, and can also make for low voltage conditions at idle too.

1969 Camaro 383
2.02/1.63 & 234/244 Vortec
TH350 / 12 bolt 3.73
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