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Old 12/05/2004, 09:42 AM   #1
gunzpilot
 

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Power Steering Problem

I replaced the power steering pump, on my GT/CS a few years ago. The power steering does not work well now, until I am moving ( or RPM's are up ). The fluid in the resivior does not hardly move at idle, but, flows when I increase RPM's. I am guessing the Power Steering Pump is shot. Any thoughts? Thanks!
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Old 12/05/2004, 03:45 PM   #2
Jayscal
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Re:Power Steering Problem

There is always the possibility of a hose being kinked. When you start moving and the RPM's come up, the pressure rises and the fluid is forced thru a kinked hose. This will make the power assist work, but at idle the fluid won't flow well to the control valve.

From what you describe, I would bet the pressure line from the pump has a small kink in it. Do you have the correct bracket with the 2 hole bushing that mounts low on the shock tower? This keeps the hoses from kinking. I had many problems with the factory 289 P/S hose set-up because I ran the HI-PO exhaust manifolds. I solved the problem by using the big block P/S bracket that mounts on the lower control arm. Now all the hoses go straight down from the pump and don't get burned by the exaust when I make tight turns.
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Old 12/05/2004, 03:52 PM   #3
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Re:Power Steering Problem

Picture of Big block P/S steering set up.
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Old 12/05/2004, 03:53 PM   #4
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Re:Power Steering Problem

Control valve view.
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Old 12/05/2004, 07:22 PM   #5
66joej
 

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Re:Power Steering Problem

[quote author=gunzpilot link=board=1;threadid=1234;start=0#msg6918 date=1102264925]
I replaced the power steering pump, on my GT/CS a few years ago. The power steering does not work well now, until I am moving ( or RPM's are up ). The fluid in the resivior does not hardly move at idle, but, flows when I increase RPM's. I am guessing the Power Steering Pump is shot. Any thoughts? Thanks!
[/quote]
Just my 2 cents but did you put power steering fluid in the reservoir. The Ford pumps call for ATF (auto trans fluid). I found this out many years ago. The relief valve in the pump tends to stick with the PS fluid. It will work if you rev up the engine.
Joe
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Old 12/06/2004, 06:56 AM   #6
gunzpilot
 

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Re:Power Steering Problem

Thanks Guys-

I checked all lines and did not find any kinks. I do have the bracket mounted on the tower. However,......I did use power steering fluid. Has anyone else heard that I should be using Auto transmission fluid?

Scott
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Old 12/06/2004, 08:06 AM   #7
68gt390
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Re:Power Steering Problem

[quote author=66joej link=board=1;threadid=1234;start=0#msg6947 date=1102299739]
[quote author=gunzpilot link=board=1;threadid=1234;start=0#msg6918 date=1102264925]
I replaced the power steering pump, on my GT/CS a few years ago. The power steering does not work well now, until I am moving ( or RPM's are up ). The fluid in the resivior does not hardly move at idle, but, flows when I increase RPM's. I am guessing the Power Steering Pump is shot. Any thoughts? Thanks!
[/quote]
Just my 2 cents but did you put power steering fluid in the reservoir. The Ford pumps call for ATF (auto trans fluid). I found this out many years ago. The relief valve in the pump tends to stick with the PS fluid. It will work if you rev up the engine.
Joe
[/quote]

What type of ATF did you use? When I replaced my pump, hoses etc., I originally used Dexron-III Mercon ATF fluid. Had problems with power steering working properly. Transmission shop I went to recommended I drain the Dexron-III and use Type "F" ATF for pre 1981 Ford Vehicles. Don't really know what the difference is but, it works now with no problems. Type "F" ATF can be picked-up at any local automotive parts place. Just a thought.

Don
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Old 12/06/2004, 09:23 AM   #8
Jayscal
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Re:Power Steering Problem

I always used type F tranny fluid in the power steering, because it is what I had in my garage. Looks like you get off easy this time. Glad to hear that no lines were pinched.
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