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07-30-2010 #1
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Power steering craziness needs diagnosing
It's on my 72 Chevelle convert with a stock power steering set-up.
Problem: When cold, the power steering works as it should, but after about 5 minutes of driving the "power" part of the steering starts to fade away. There are no strange "chirping noises", no leaks, and no bubbling when I check the PS resivoir.
I need to have this fixed today for a show tomorrow, but I'm not sure where where to start, and I don't want to just start buying random parts. Any help or input would be greatly appreciated.
Thanks in advance,
Jeff
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07-30-2010 #2
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Is the fluid in good shape ??
Like , is the fluid dark , burnt , very very thin ..
You may try new fluid ..
The pump could be going bad OR the steering box could be going bad ..
The cheapest / easiest place to start is new fluid ...
Next cheapest / easiest is a pump.
Most expensive / hardest is the steering box.Jeff Tate
U.S.A.
"The best thing about participating in these events is that you get to hang out with a group of intelligent like minded people who live to achieve things in their lives. You won't find a lazy, mean, or dumb bone in their bodies." Bret Voelkel, RideTech
07-30-2010 #3
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most likely the pump or pressure valve in back where hose goes in. but one other thought is a bad pressure or return hose as it heats up is doesnt let fluid run but usually if it doesas it heats up the old pump took a dump.
Lee Abel
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07-30-2010 #4
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Jeff,
Thanks for the input.
I'll check & replace the fluid first.
Is there anything else it could be other than?
1) Belt
2) fluid
3) hoses
4) pump
5) box
Has anyone had this issue before? I've been playing with cars for quite some time and haven't seen or heard of this. I've heard the chirping before, but never this.
07-30-2010 #5
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If it only does it when the system is warmed up ( hot ) then it could be worn out fluid that gets way too thin when it gets hot , or the pressure valve in the back of the pump , or the valving in the box..
It's just wierd that it does it when hot.Jeff Tate
U.S.A.
"The best thing about participating in these events is that you get to hang out with a group of intelligent like minded people who live to achieve things in their lives. You won't find a lazy, mean, or dumb bone in their bodies." Bret Voelkel, RideTech
07-30-2010 #6
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Thanks again to both of you. I'm headed out to get some PS fluid in a bit. I figure I'll drain the old and replace it.
Jeff, I agree with you that it's temp related and the only variable is heat, which would say chances are good that the fluid may be the cluprit. If the valve was plugging, I can't see where that would be heat related. Like you said, the fluid is the cheapest and fastest test.
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