I own an 06 Ford Mustang V6 4.0 manual 5 speed, I was driving down the road with the A/C on and when I pushed in the clutch the RPMs started to jump up and down and the Engine was idling rough. Then it stalled out. It took three times before it started back up, and when it did, I shut the A/C off and drove home fine. The A/C is Cooling but the car acts up more when it is on. Can anyone help or have ideas on what this might be?

 

How many miles? When was the last time you cleaned the TB and replaced the fuel filter? Or ran a tank or 2 of fuel system cleaner?