More engine probs..No codes on computer Helpppppppppp

[ArdmoreS14]

Ok I got some more engine probs. Since the dist. thing was fixed It has been running good since. Now the water pump went out the starter and the freakin EGR temp sensor. After all that its still running chitty. Ok its all under 2000rpms and only when it has a load on the engine ( like in gear). When Its gear and I am stopped the rpms drop then go back up then drop again until it eventually dies. When I take off kinda fast it acts like it dont wanna go, but when I give it gas just a little bit at a time and get above 2000rpms its good. When its in park or nuetral(no load) I can rev easily and it idles with no problem. But the only thing is its idling a little higher than normal about 1000rpm(no load in park). Did a self diognistic no trouble codes (55). I am thinking its either a vacumm prob. or a fuel issue. Maybe the pressure regulator?? Like I said its only under a load(like a vacumm prob.) and its like its running outta gas. Its not a hard stutter like it was a spark issue, but like its outta gas. Again when its in park or nuetral it revs easily with no hesitation. And above 2000rpms there is no problems, except its maybe a little sluggish takes a little longer than normal to reach 50 55 60 65...... Got any clues??