need power steering
Did same to 75 best thing I ever did to car. Went through that nut roll with steering boxes. A/D/R I cannot see why everyone hangs on to a stock system or update to a modern 1990 Delph system (WHAT 1990 modern?) Steeroids is way to go anyone want a stock system off a 1975 corvette? With fairly new control unit and cylinder and new hoses. Heck I'll give it to you. I will sell the steering box for $50 though. Just my 2 cents as always. Hope I didn't hurt any steering box peoples feelings if I'm sorry. ThanksR/S
sgm

Of course, it confirms the 'root cause' of the poster's problem being the crappy quality of new parts, these days. A plugged up 'new' hose. Wow...
Frankly, I think you got a junk control valve from ZIP. And I have no complaints with ZIP or its service [normally]. But a C3 power assist system with all new components and no actual assist being produced can only be due to a couple of things...and the most likely is a bad control valve.
Now, if ZIP can tell you [with a straight face] that they actually tested the performance of your valve when they receive it from their supplier, I guess you'll have to accept their story. But, I don't believe they do 100% {if any} testing on rebuilt control valves. And I would bet a good amount of money that their supplier doesn't either. Considering how much money you've already spent with them, they should help you out and swap the control valves if you pick up the shipping costs. That's my 2 cents....

71 Vette, yes every valve is tested before it leaves the manufacturer which is in the US. The assesment I give is because of what you believe is power assist and what someone else believes are two different things. It is like comparing opinions of Elkhart green in 72.
What I said is if you can turn the wheel from lock to lock with the car sitting still it is working, are you saying I am wrong about that? I can't even begin to account how many cars and valves I have installed, my findings come from experience with the massive number of Corvettes that I work with, not from one car that did this or that. I have had cars with extremely low miles and the same with high mileage and while the effort of the steering can be different, it is all the same in what I stated, if you can turn the wheel from lock to lock sitting still then it is working, If you can't, then Houston there is an issue and we need to start looking to see what is wrong. It could be a pump, lines, relay etc, but you also can't rule out human error when the parts are installed. I am trying to fix cars over the phone customer without being able to see what they working with, are the lines crossed etc. So for one I think the Domestic parts are great compared to what allot of other companies are selling. I still believe that my comments were dead on.
Justin
I have re-read this entire thread, and it seems that my comments should have been more directed at the OP's description of what [he reported] ZIP told him, rather than what you actually stated in your post. My apologies.
But, you have to admit that finding an obstruction in a 'new' hose is a pretty "odd" find for a 'non-function' problem for the C3 power steering system. the probability of that being the case is likely less than 1 in a 100 compared to the pump and/or control valve being the cause for that fault.
My assumption was that 'new' parts bought from ZIP were the OP's problem. Unless the hoses were purchaed from ZIP, as well, it turns out that this failure was NOT ZIP's responsibility. Apologies for my erroneous assumption. :o
P.S. I'm glad to find out that someone in the aftermarket parts supply network expects functional parts to be tested.
We spend a ton of time making sure our parts are what we say they are.
Yes many times a supplier can really wreak havoc on that idea, but we stand behind what we sell and when there is an issue I am there to help solve it. The biggest problem I run into is new owners thinking of how something should work instead of listening to someone who knows how it should work. I understand where this comes from, because there is so miss information out there by some vendors. I look at like when I go into the Doctors office, I try to listen and not give advice.
Yes I do find it odd that there was something in the line. Now it could have been something from the packing in the box, who knows it could have been anything. I try to and it is a good habit to get into whenever you have new or even old lines you blow them out. This will prevent something like this from happening.
Thanks
Justin
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