Stops blowing cold air anytime the vehicle is at idle at a stop light

Check your vacuum at the door for the ac evap you may not have enough at idle.

This guide will help us fix it

https://www.2carpros.com/articles/car-air-conditioner-not-working-or-is-weak

Please run down this guide and report back.

Mine is doing the same thing. I posted a question also. I noticed that my compressor clutch was disengaging when stopped. It will come on for a second or 2 then drop out for about 5 or 8 seconds again. Its not staying engaged long enough to cool. Check your clutch. I dont know yet whats cousing this but if I find out I will reply back if you'l do the same. I think its gonna be a pressure switch or stat.