I I I rw Fig 58 Fast Idle Adjustment outside during air conditions m h v hum conditions the lever may be pushed fully down to supply m outside air to the system COOL Depress this lever as required to provide the cooling lever m COVER PLATE Fig 59 Engine Warming Hole Cover moved down off its detent position before the air conditioner blower will operate FAN This switch controls either the heater or air conditioner blower depending on the position of the COOL lever described above During cooling operation this three speed switch must be in at least low position CAUTION Momentary engine overheating may occur if the air conditioner is being operated during extended periods of long uphill pulls or during extreme outside temperatures Should the Temp Press light come on under such conditions the car should be stopped and the air conditioner turned off Check the engine fan belt for excessive looseness and the engine oil for proper level If these items are satisfactory start the car then continue to drive and operate the air conditioner as long as the TempPress light remains off