the car: 93 Pontiac grand am with quad 4 motor.
car sat for 6 months. when at operating temps, the car will stall on braking
or when put in gear at idle. runs great at speed, or when cold. so far have
changed the fuel filter, removed and cleaned throttle body, and changed the
idle air controller. none of witch helped. any ideas from the gm pro's
here?? I am a ford mechanic, and therefore do not know much about gm cars.