Another problem for you guys to think about. Ok so I have a junkyard engine @ 92k miles now I just serviced it at 3500 miles with a new OEM (yea 15 bucks grr) oil filter and Castrol Synthetic blend 10W-30. Now the problem is I hear a vacum leak next to the air filter box where there is this thing that has a line in and a line out (close to the engine). If i disconnect I guess the input (sucking) side the noise is gone. I can not pull any codes off the ECU it will light but nothing comes off not sure what to try there. SO pretty much my problem is now whenever I'm sitting at a traffic light the engine will stall out and will not start immediately. Today alone its done it at 3 different traffic lights, the first worse than all of them I had to pop my hood and wiggle some stuff and finally it started and on my way, but its wierd b/c when i drive w/ the AC on it will blow cold then if i accelerate hard it will warm up or sometimes it will just not blow cold (not sure if I need to charge my AC). So pretty much what I'm doing right now (which I would like to fix) is having to take the car to the dealership and get them to check out the ECU / idle stuff. ARG please help!