Worn motor mounts can cause the motor to rise during acceleration, causing a clunking noise and possibly damaging the AC hoses. Damage to the AC hoses can cause a loss refrigerant resulting in no cold air from the AC. The motor mount will need to be replaced prior to repairing the damaged hose or the problem will continue.Google+
Car Problem Reports
Mercury Sable Worn Motor Mounts Can Damage AC Hoses
Mercury Sable Problem
Visitor, 1993 Mercury Sable, 162,000 mi
I have Worn Motor Mounts. Was told I need A/C compressor fixed. Not sure if the worn motor mount is the cause but it might be.