Any time I have the AC on, my car acts funny. When I come to a stop and depress the clutch pedal, my rpm's drop real low and the car shudders like it wants to die. (RPM gauge drops to 2 bars for a second). It never actually dies, but I'm worried that it will soon. Any ideas what might be causing this?

 

step 1: turn a/c off

step 2: drop top

problem solved....

seriously though, check your idle speed.

 

Step 3: Die of exposure as it is 113 every day here in Fresno!

Do you think ti could be the ECU learning to deal with less power from having the compressor on? I have had the car for approx. 1 year and have used A/C maybe a dozen times at most...?

 

I find that this happens to me also when I've driven the car the night before and the temperature was significantly cooler. Then the following time I drive the car, it needs to adjust to the current air temp. It does the shudder a few times and learns quickly.

 

Got the same thing on my AP2. Probably just one of those things the car does. It has never died on me so I'm not too worried about it.