I have a 1994 LS that if I'm driving and I have the ac on and come to a stop then kill the ac the car will start to bog and if I don't give her some revs she'll stall but will always start back up right away. I'm thinking it could be the temp sensor causing it to run lean or something since the car never gets to operating temperature.

 

If you have a good thermostat in your car, the thermostat will fail in the open position.

 

Does the idle increase when the Air Conditioning turns on? It should.