Fuel pressure

Been having a very rough idle after a cold soak. Checked fuel pressure. With key on, not running, pressure is 44 psi and drops slowly. With car running at idle, pressure holds steady at 48 psi. I dont know what the normal pressure should be. Does this sound like how it is suppost to be?

Fuel pressure sounds about right. Is the check engine light on? That could give you some insight as to what the problem is. You may need a recall done. Could be many things.