Here is the issue.

I live in Florida

When it is hot outside, the A/C blows warm when I am at idle or in Park, but it blows cold when I start driving.

I checked the both fans, and they are working. In addition, the the condenser and dryer are new because because I had a leak.

So, I did a test by putting the car in Park, and I start accelerating the car. The A/C started blowing cold, so now I am at loss.

 

your going to need a set of gauges to check if your compressor is weak

 

also was the system evacuated properly when you changed the condenser.

 

Is the compressor engaged at idle? It may be dropping out. If it's engaged, then fault could be weak compressor, low charge, expansion valve, dirty condensor face (restricting idle air flow).

good luck

 

The condenser and dryer were changed by an auto repair shop. It was changed in May 2011.

 

you need a set of gauges to figure out all the scenarios that texashonda wrote