Help us understand this a little better. You had Ford install a new PCV hose? Did they replace the valve as well? Did they offer to diagnose your vehicle's problem for you? Do you have a Check Engine Light on?so this guy said that it needed a pvc hose i think or something but i got it had ford put it on
If the problem initially got better after the hose was replaced, then became progressive worse after continued driving, you may have another vacuum leak or you may have a bad or dirty emission sensor. Do you know how to check for a vacuum leak? I am attaching the Forums "How To" on this subject.
I am also attaching your thread on your transmission, as I am concerned that the issues are related.