Well I have done a complete tune up,plugs wires, cap,rotor,air filter,and had it pluged in at autozone. Gave me a 0400 code,so I replaced the egr valve, still have the same problem. Seems to me that it is starving for fuel or air. Stumped!!!
Probably an EGR passage problem, not an EGR valve problem. Isn't the 0400 code a EGR flow code? The EGR passages in the head and intake need cleaned out. Remove the EGR valve, use a stiff wire (or broken speedo cable, or the like) and lots of brake cleaner and compressed air and get the passages opened up. Don't forget to remove the external metal tube on the passengers side of the engine and clean it too.
Although, EGR passage restrictions generally don't cause lack of power at low speeds, in my experience.
I don't see where you have verified that the timing is not off a tooth, or checked the crank keyway, or the timing. You asked for suggestions on what to check, we told you, you done about half of them. What is the deal?
Another thing that probably needs replaced is the fuel filter, if it hasn't been done recently. A restricted filter could cause running issues too.
