power steering hard at high rpms

power steering hard at high rpms
hi there...well, heres my question. my max is automatic, I notice that my car in neutral or parking if you accelerate to 5000 rpms or 4,500 the power steering is getting a little hard. I notice when im driving my car a little more hard the steering, before a few days ago everything was ok...after feeling some problem with my tranny all this appears..i dont know why. I made the test in neutro or parkin...cause when i drove my car on 1 gear i notice my steering hard and on D etc, is not too much but i feel it.

Any suggestion???? the steering fluid, level etc is ok, theres no any leak, so i dont know what happen with it.

you may need to tighten/loosen your power steering belt. the belt may be spinning over the pully. this is just a guess

i will....i have already check the power steering senor and pressure sensor and is ok.