1999 chevrolet cavalier 2.2L stalls when braking for a stop only in cold weather

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The problem started last winter so I took it to a Chevrolet dealership and they changed the Idle Control Valve and remapped,Cam Position Sensor, Ignition Switch. Runs great during warm weather only occurs when the temperature is in the mid to low 50's or below. It will restart when I put the car in neutral and the Idle Control Valve sounds like it is sucking air when I accelerate, and when the RPM's drop while braking it gasps when I slow at about 30 mph. Now the problem has started again with the cold weather approaching and the only common denominator is the cold weather because it runs and idles quietly during warm weather. Any help would be greatly appreciated. Thank you.