Help!! Why is my Rodeo still overheating?!?

What is your question?

We have replaced the radiator, the thermostat, new manifold gaskets, new water pump gaskets and o rings, used blue devil pour n go, checked the freeze plugs and the fans are coming on.. We have a new water pump just haven't gotten down that far yet. I was really hoping I wouldn't have to. Also the top radiator hose keeps randomly collapsing now and, from what we can see and tell, there are no leaks. Could it simply be my radiator cap not relieving the proper amount of pressure and if so how would I be able to tell?

What makes this problem better or worse?

All the time.

How long has your 1999 Isuzu Rodeo had this problem?

two weeks now