My A/C light starts flashing after about 30 minutes of use. The A/C is still cold while it's running, but it warms up when the light starts blinking. At this point I'm planning on replacing the clutch assembly. Does anyone have any experience with this? Do I need any special tools? How far apart do I need to take the car so I can reach the clutch? Is there something else I can test to see if the compressor is on its last legs, before I put money into the clutch? I'd appreciate any help from someone with experience. Thanks.