Got my truck fixed this weekend. I've been having fuel issues, and everyone said it was fuel pressure regulator. With the problems I was having, and the description of the issues, that was a good guess. Put a new fpr on, and still the same issue. Called and got another one shipped to me. Still the same issue. Decided to work on it this weekend to put back in my fprv shim kit that I removed while doing first fpr. Thought id check power to fpr again. Still had power. Checked factory fpr that I thought was bad, it hummed. So I knew it was workin. Tried the one I had bought, same thing. Found out it was the plug not making connection. Power wire kept working loose from inside. Got it zipped tied fast to plug, and so far is working great. Just some insight for future reference if anyone ever has this trouble, make sure plug wires aren't coming loose on ya.