1994 Ford Taurus Oil Pump/light

Engine Mechanical problem
1994 Ford Taurus 6 cyl Front Wheel Drive Automatic 160K miles

Re: 1994 Taurus 3.8L engine. I recently completed the process of removing the timing chain cover to get at a stubborn stud that goes thru the water pump and timing chain cover. I did this with the oil pump intact. I did not use any new parts for the cover or the pump. After everything was back together, it wouldn't start and with the help of one of your techs, I got it started, but it will not idle or accelerate. I repeated the process about 5 times and it would start but, again, will not idle or accelerate. I noticed that indicator lights on the dash went out, but the oil light stayed on. Of course I put new oil in and I don't know if the car was running fast enough or long enough to pump oil to make the light go out. I checked and the wire is connected to the oil pump sensor. As I understand it, the hex rod that extends from the end of the distributor is what drives the pump and since the distributor seats properly, I have to assume that the rod is seated properly within the pump gear. When I had the oil pan off, I did not remove the pick up pipe, but did clean the screen and it was clear. I took the new oil filter off too and it's dry.