Ac only cools when accelerator is pressed. when sitting in idle traffic, only blows warm air. had ac recharged, doesn't help.

Philip, You may have to have a good tech, check,diagnose and estimate repair. Could be a few things causing poor AC, recheck your charge level,check your fan at the condenser, make sure the condenser isn't obstructed, compressor clutch could be faulty, system could be plugged with contaminates limiting refrigerant flow.You say the system has been recharged, was it done properly, if not system could be plugged. AC system should of had system checked for leaks,evacuated, flushed, new orifice tube, then recharged with proper quantities of oil and refrigerant. Check the attached links,instruction and guides, Good luck
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Car Air Conditioning Problem Diagnosis Repair Help
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Car AC Not Blowing Cold Enough Car Repair Information From MasterTechMark

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Have your a/c condensor fan checked out. It most likely is not working, or is not functioning at full speed. When you are driving air is being pushed through the condensor helping to keep your a/c cold, but when sitting in traffic there is no air flow if the condensor fan is not functioning at full speed.

make sure the thermostat is set to cold. just switching a/c on does not cancel the therm setting. or possibly you need to recharge your a/c system....

U could be run on eco a/c where the engine is using the power until it has extra to spare. Warm at start could be simlarly that there is now cold air yet and has to "make" cold air to distribute when ready. See if u can find a setting for reg use. cheers, ps eco saves dollars/euros.

It sounds like your AC unit could be overheating or even damaged.

AC units have a sensor that will turn them off automatically to prevent damage from overheating. If there is an insufficient amount of air flow, the unit will heat up, and then eventually turn off.

When the car is moving, more air is forced over the unit, likely keeping it cool enough to run, however, when the car come to a stop, it loses that air flow, and quickly heats up. Thus, the AC would work while the vehicle is in motion, and overheat and stop when the car is stopped and idling.

However, the AC unit could be completely blown. The cold air while moving could be just a case of air being forced into the car. Think of a house fan, the fast the wind blows on you, the cooler it gets.... Thus, it could be an illusion that the AC is working when car is in motion, when it really isn't.

Hope this helps.

Condition

A/C stops cooling and blows warm air when the vehicle is idling for an extended period of time such as sitting in traffic.

Cause

Inadequate airflow over the condenser may cause this condition.

This problem is a known issue, See Bulletin No.: 01-01-39-004A
http://www.grandprixforums.net/website/Docs/TSB/99-01-39-004B_Air_Conditioning_Odor.pdf

hello there:
you may have a blockage in the system and then again it could also be low on freon and may just need to recharge and i would suggest taking it to an a/c repair shop and have them do a diagnosis on the a/c system it should not be more than about $150 for them to check system and recharge the system unless you have other problems hope this helps you out please leave a review thanks sincerely D.Jones

the refrigerant gas is not enough . need recharging.

There are special cans of R-134A with dye in them for detecting leaks. Most leaks occur around the fittings near the compressor. Recharge the system with the leak detector can or R-134A. There are also cans of R-134A with an additive to stop leaks. I would use these products to either detect your leak or to stop it. Best of luck.
Greg