| The A/C compressor clutch cycles rapidly on and off 
Probable cause: 
|  | A/C system is overcharged (Excessive pressure on high side of system causing pressure sensor to turn A/C compressor off) |  
|  | Radiator and/or A/C condenser fan inoperative  |  
|  | Low idle speed |  
|  |  |  
|  | Faulty A/C pressure sensor |  |