It got so bad that I almost wrecked. Stalled in the middle of a turn and lost power steering. Went straight and had to force the wheel to complete the turn so I didn't crash into the car also turning next to me. CEL finally came on this time and took it in. It was a gummed up Air Control Valve. They ended up just replacing it rather than cleaning it. They flushed out the fuel line at the same time. Has been great for the last year with no probs since.