My compressor is making an audible ticking noise when it idles and you have the ac or defroster on. What could be causing this? My guess is the clutch kicking on and off. What would cause it to kick on and off so fast? It ticks about as fast as a clock, one per second. Thanks guys.

 

could possibly need oil in compressor?

 

Maybe the bearing going bad or the clutch? does it click whe the A/C is on and when its off?

 

Does it cool properly?
Do you have manual or Electronic Automatic Temp Control?
Let me know and I will try to help you out..

FordMasterTech

 

Could be the cycling switch has gone bad. Mine on my 97 F-150 went bad about 2 years ago, and the A/C clutch would cycle constantly.