My WRX just recently started making some rather strange noises when the AC is turned on. While I am driving with the AC on, I will intermittently hear a "PSSSSSTT" noise coming from the engine about every 30 seconds or so. It almost feels like the power is slightly effected when the AC makes this noise as well. Any ideas as to what this could be? Is my AC on its way out? It still blows very cold air.
I also have about 300miles untill I cross over the 36000 mile mark, so would this be something that I could still potentially get fixed from the dealership under warrently if I act quickly?