Coming back from the beach a few days ago my car, a 2002 Subaru Outback, started sputtering like I was running out of gas. I wasn't. I stopped and checked everything out under the hood, but nothing seemed wrong. The check engine light wasn't on and when I started driving again and the problem went away. It drove fine for two days then the problem came back only worse. Now it stalls 2-3 seconds before accelerating. Its going to the shop tomorrow but I want to have something to tell them besides "my car no workie, take my money please." The only possible lead I have is that my check engine light has been off and on for about the last month and is signalling the catalytic converter, but it hasn't come on in about a week. Oh and I have leaky head gaskets, but I keep the oil every few days and keep it at the proper level, and that is being fixed in two weeks. Help?