Question about Cadillac STS

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Had a power steering leak, changed pump still had leak. Found leak in hi pressure hose and replaced it. After about 10 minutes of operation, power steering quit completely. Please advise as to what new problem may be.

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  • greengablesr Aug 26, 2011

    The pump is mechanical not electrical. The new pump was never run low on fluid. I think that the $15 that I paid for answer to my problem was a rip off.

  • greengablesr Aug 26, 2011

    We ended up using the original pump. The new pump was faulty, we were compensated by the parts dealer. Your generality in providing answers is worthless.

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Hello,

Power steering systems are actually pretty basic as far as operation, however pain in the **** when it comes to leaks. As read, you said you had leak in what you thought was in your power steering pump, and then found out it was the hi pressure hose that was leaking, Unless your car has some type of fuse that controls it in your fuse panel. (check owners manual, to see if you have a relay type of fuse that controls the electrical circuit that triggers the pump) if so, it could of got blown. However, I believe this is what has happened. When you had a leak in the power steering, you thought it was the pump, so you replaced the pump, which of course pump was probably bad because of lack of fluid circulation with a leak, it instantly will dry out, from high heat of friction from barrings, metal on metal with no fluid. Now, that being said, you put new pump on, but sense the leak was actually off the high pressure hose, means it is highly possible that your new pump, by driving it for even 10 minutes, with the leak of high pressure hose, could of cause new pump to burnout. So, at worse case example, you have burnt up new pump, because of the time you replace the high pressure hose might of already done the damage to the new pump. But, before you go that route of replacing again, the new pump, check all your wire connections that are triggering the pump. Make sure all connections are hooked up good, and making good contact, as even the pump has to have power supply to trigger it, and check to see if inline fuse (if has one) is good and of course as said earlier fuse box to see if as a safety feature, sense would be low on fluid with a leak if it blew the fuse that controls the electronics that go to the pump , make sure it is good. I hope this helps you in the areas to look. Places like AUTO ZONE, can look up your car and let you know for sure if your pump is controlled by a separate fuse and where it would be. Thanks Mike from Fixya

Posted on Aug 26, 2011

  • Mike Cairns
    Mike Cairns Aug 26, 2011

    I am sorry you feel that way, in my defense you did not even state the year or model of your car. But that being said sense it is mechanical, it is possible even though you bought a new pump it is faulty. Because if mechanical, there is nothing else it could be. I had to put on one time 3 starters on one car until I found onethat worked. Just cause there new, does not always. guarantee there good or work right. That is what I would check into.mike

  • Mike Cairns
    Mike Cairns Aug 27, 2011

    Let me get this straight, i told you it was a pump issue, I also said it could be the new pump you bought, and come to find out , it was the original pump. So, I am worthless when I told you it was a pump issue. I would love to understand where you feel I did not steer you right, when my earlier comment said above that it a pump problem. I even used a example of a starter, that told you one time, i had to buy 3 starters to find a starter that was not faulty. So, you end up going back to the dealer and finding out your new pump was faulty, just like I said above about the starter example. But my answer was worthless. I see. I think a did a good job, diagnosing it was a pump problem with new one or old one, with information I had on your car, no model , year, style, motor, nothing, then I ended up steering you toward the fact sense it is mechanical, then it for sure is a pump issue. I apologize, i should of spent more time and made up a bunch of mechanical terms when it still comes down, i said it was a pump issue. Have a good day. Glad you solved your PUMP issue.

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