So whenever i start my car my a/c works fine for a while. When i come to a stop however, the a/c stops blowing cool air after 30 or so seconds. the engine oil temperature dramatically increases too. but when i press the gas it goes back down to its original temperature and the a/c works well. i have a feeling this has something to do with the radiator sensor not functioning properly and not cooling my engine until the engine gets a little hotter which in turn affects how the a/c works. But then again i dont know much about car problems...