mjselling

1991 z32 na. tps was replaced and adjusted. car ran great until the engine quits when accelerating fairly hard. had to have it towed, wouldn't start until the next morning. it starts but afraid to drive it anywhere until the mystery is solved. all dash lights work, engine turns over well,fuel pressure is 42psi. any advice or cures would be greatly appreciated, thanks, it's a 5 speed manual transmission