engine swap 3400 88 cavalier

okay j body boys and girls, got a problem just finished my engine. heres what i got, a 1988 2.8 L block bored over to a 3.0, pop up pistons, and the kicker. 2001 grand am gt 3400 heads ported and polished. took a little bit of work. Had to relocate the oil pressure sensor, bore a hole in the heads for a water temp sensor, and a little modification to the power steering pump. Because i ran out of money i didnt put a megasquirt system on the engine which meant i had to switch the sequential fuel injection 3400 fuel rail to run as a batch fire because of the OBD-1 computer. then i had to make a custom bracket for the tps sensor but it still wont idle I think it is either the computer or another overlooked sensor. it still runs and drives quite quick actually, but i have to toe-heel the brake and the gas when i clutch it to stop. its a little bit of a pain any help? this is my car http://members.cardomain.com/techno240