Power Problems

I have some power problems with my 96 tracker, 2 door, 4x4. When you start it up it will idle just fine either cold or hot, but the thing is that when you step on the go pedal, it bogs down really bad. Right now it is to the point that you have to feather the clutch to get it to move. I have done quite a bit to it so far, but without results. I have; new plugs and wires, new fuel and air filters, checked the fuel pump, cleaned the fuel system, new dist. cap and rotor, checked/ cleaned the intake system, checked/ cleaned the EGR, checked for vacuum leaks (there arent any). And I have pulled the codes, right now it shows a P0510, wich is a closed/ mi-adjusted TPS malfuction, and a P0300, wich is a random/ multiple cylinder misfire. I am not sure what to do with these codes. Could there be a problem with my coil? And what about the TPS thing, is it just an adjstment?:banghead:

With the plugs and wires did you also install a new cap and rotor?
Are the new wires nice and tight on the plugs and distributor?
New coil wire too I guess, check the coil?
How about pulling the injector(s) and cleaning it (them)?
Check the timing?

try checking the O2 sensors and exhaust system as well as the EGR valve. mine did the same thing then found out the my egr valve had come loose and wasnt even doing its job.

this is along with what baumbr said :)