As i mentioned in a previous post my fuel pressure regulator is not connected to the intake mani like it should be. The top hose connector on the fpr is broke off so previous owner just sealed the hose instead of replacing it.

Would this cause the car to have low idle(almost dies on start up and when coming to a stop)???

 

Why don't you replace it with an intact FPR, reconnect the hose and find out? It's a simple thing to do.

Why are we getting a rash of posts where people KNOW what's broken yet do not fix the problems?