blown out two new power steering pumps!!! what is causing this!!! help!!!

 

Define blown? Often the cause is just cheap rebuilds from the parts store. On the other hand the distinctive sound of the pump being stuck in bypass indicates a downstream issue. A failed hydroboost or steering gear is definitely possible.

 

i purchased the rebuilt from two different stores ,so i highly doubt they were both bad rebuilds. how can you test the hydroboost?