So, the hood vents right below the windshield wipers have slight amounts of steam visibly coming from them if I'm stopped at a red light for more than 20 seconds or so...right then the idle RPM's drop a little. There's also a faint smell of gas that comes through the AC when it's warm out. Is this something to be concerned with? I'm puzzled as to exactly what could be happening.
Hrrrrmmm.. I was going to suggest maybe you have a heater core leak. I don't know what it would be, other than to check for leaks in the fuel system (fuel pressure check after the car has sat a while), inspect EGR piping, look for exhaust leaks, loose O2 sensors, etc.
Hmm - not sure. Maybe someone who knows more than I do can answer that. I do believe that the purge canister is located near the brake booster on the later years (near the intake filter box on earlier years - not sure where the production switchover was on that). But seems logical that an EVAP problem could be related to fuel smell.