Vehicle air conditioner control system

A vehicle air conditioner control system has an air conditioning device that performs a refrigerating cycle, a compressor running rate control means that controls a running rate of the compressor, a deceleration fuel cutoff executing means that performs cutoff of fuel supply during vehicle deceleration, and a fuel supply recovery executing device that cancels cutoff of fuel supply and recovers fuel supply at a higher vehicle speed during vehicle deceleration fuel cutoff period with air-conditioner ON than during vehicle deceleration fuel cutoff period with air-conditioner OFF, wherein the compressor running rate control means increases the compressor running rate for a predetermined period (t13 - t14) just before a fuel supply recovery time (t14, Vacrec) with air-condition ON during the deceleration fuel cutoff period more than during non-execution of the deceleration fuel cutoff, and subsequently decreases the compressor running rate at or just before the fuel supply recovery time (t14, Vacrec) with air-condition ON equal to or less than during non-practice of the deceleration fuel cutoff.