Ford Taurus X with about 125,000 miles on it. Recently the PS has failed.

What is your question?

The problem is intermittent. It usually works fine at first but after about 20 minutes of driving the steering becomes very heavy. Sometimes it stays that way but often the power steering will kick in and out several times during a drive. I see that this problem is fairly common among Taurus owners. It's a very unsafe condition and very expensive to repair. Seems like a recall is in order!