The power steering pump makes a squealing noise when cold. After spraying like WD 40 on pully around the base it stops. Then at a acceleration makes a grinding noise kinda like a bearing noise. No leaks and fluid is nice and red and full. What could it be?
My car has 200000 miles.
The power steering pump may be going bad if you are hearing a grinding noise. The fluid should not be red, unless the fluid was flushed out and replaced with transmission fluid. Power steering fluid is light brown like fresh engine oil, but a lot thinner.
If the incorrect fluid was put in the pump this could lead to failure of the pump. Check to make sure the pump belt is tight. A loose belt can make the squeal noise and grumbling noise if the belt is too loose. If you nee assistance with these checks, have a certified mechanic inspect your vehicle and pinpoint the source of the noise in order to make the right repair.