buying an obd1 distributer is going to fix your problem. your ecu is looking for the crank position sensor to come from the distributor, well, since its an obd2 distributor, its not going to. im pretty sure Obd2 dist dont have the crank pos sensor in them.they have the cps mounted on a fixed position on the driver side of the engine block inside of the timing cover. its not getting a cps input and is the root problem of all your codes. If you dont have crank position, you dont have tdc or cyl position, if i remember correctly that is all configured by the crank sensor. put the same distributor on you had before and your problem should be solved. i could be wrong but i thought those codes were connected to each other, and im pretty sure the crank sensor is not in the distributor on obd2 motors, its a mounted sensor .