IM HAVING CAR PROBLEM WHEN I STOP AT A LIGHT?

HAVE A 1990 CAMARO RS THAT STARTS UP FINE BUT WHEN IT RUNS FOR AROUND 60 MINS AND I GET TO A STOP LIGHT OR SIGN AND I BREAK AND LET GO OF THE GAS PEDAL IT TURNS OFF SO I HAVE TO KEEP MY FOOT ON THE GAS AND ON THE BREAK AT THE SAME TIME SO IT WONT TURN OFF . THEN I HAVE TO PUT IT TO PARK AND STARTED UP AGAIN AND IT STARTS UP FINE . THE OTHER THING IT THAT WHEN IM GOING GOING LIKE AROUND 40MPH AND I BREAK QUICKLY THE GAS GAUGE GOSE TO THE E FOR EMPTY THEN THE CAR KINDA FEELS LIKE TURNING OFF BUT A SOON AS THE GAS GAUGE EVENS OUT ITS OK BUT I STILL HAVE TO PUT ON THE BREAK AND THE THE GAS PEDAL . I HAD THE EGR SENSOR , CAP ROTOR , TPS SENSOR ,REPLACE BUT I HAVENT HAD A TUNE UP YET WHAT YOU THING IT CAN BE