no power steering when hot on 1996 Buick Park Avenue

why does my steering work when its cold but after i drive a while it dont work at idle, only when i give it a little gas

Asked by for the 1996 Buick Park Avenue
The power steering pump may be failing on your 1996 Buick Park Avenue. When the power steering fluid is cold it is thicker and the pump is able to supply the necessary pressure. When the fluid warms it thins out, the pump must spin faster (as you rev the engine) to build the necessary pressure. A good repair shop should be able to confirm this by attaching a pressure gauge to the power steering system. Please use the following link to find a repair shop near you -
Jim; You were right on the money! A new pump and its like new again. Thanks soooo much.
Glad to be of help!