The code if i remember right is a PO 401. So what should i do now. I thinks that has to do with insufficient fuel flow or around that area. Or so ive been told.

 

thats insufficient egr flow. most likely a bad DPFE egr sensor, clogged egr port(s), or faulty egr valve.

what year and engine do you have?

 

I have a 98 with a 4.6L.

 

It is a EGR low flow code and I venture to say you need to pull the TB elbow off and clean the 5/16 ports in the pack of it. I would pick up a new TB gasket in case yours is brittle. Mine had 140K on it and I reused it with no trouble but that was before I could even find one. The ports in mine had 1/4 worth of carbon build up.
It could also be the DPFE sensor, it's the little metal or plastic box that sits out in front of the EGR valve. It's about the size of a deck of cards and has 2 vacuums hoses and one plug in. You can test it by back probing the wires when the engine is cold then when it is hot. Refer to a repair manual for the details.