2007 Nissan Versa

Engine Performance problem
2007 Nissan Versa 4 cyl Front Wheel Drive Automatic 58000 miles

I have a 2007 Nissan Versa H/B with a 58,000 + miles on a CVT transmission. Up until a days ago the car ran fine and then the heat kicked up in Charlotte. Since then the vehicle when started will run well. Its not until I make my first stop (Stop sign, red light, etc) will the vehicle have a problem. When I go to accelerate, the vehicle slowly makes its way to the direction its is going. When I'm able to get on the highway I will press on the accelarator and it will take its time to get to an acceptable speed. * One thing I did notice is if I have the air conditioner on and I put the cruise control on aswell the speed of the car will decrease on the dash!* What could it be?
August 11, 2010.

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