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Power steering pump

14915 Views 8 Replies 6 Participants Last post by  Brobciu52
I have a mazda 3 2010 hatchback and i changed my power steering pump and the new one makes a whining noise but my old one didnt and i want to know how to fix it please help:weary:
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Power steering noise, 11' Grand Touring Hatch

its just the pump doing its thing guys, when you turn hard especially at stopped or low speed it needs a lot of fluid pressure to make the assist happen right, well that puts demand on the pump more than just turning at 30mph or so as the car when moving does not need as much force to turn. the more the pump has to build pressure the more it will work, the more it works the more electrical demand and then you get a noise, mine does it in parking lots a lot, its fine. its the same idea as the regular belt driven pumps, when you turn hard while stopped or at low speed they have to build a lot of pressure, well that makes them whine. same with an electric pump.
Evening all,

I understand the above explanation and it makes sense. But the car never ued to do this. It has about 80K on the car and we recently went through a really cold spell and salty roads for what its worth. The fluid level is fine too. Not sure why all of a sudden it would start to make a minor squeal when turning in tight spots at hardly any speed or sitting still when it never did.

Thanks guys and have a nice night.

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