It's worst when you first hit the gas. Check engine started flashing. Even in Neutral, you can hear the engine pick up power roughly. Idles fine.

It's a 2002 Protege5. And I'm already dealing with rust, alignment, and brakes. The car has been sitting for weeks. Last time I drove it, it ran fine. I only started it once and let it idle for 10 minutes. Maybe I shouldn't have? I want to drive this nice riding car as my daily driver, but so far I've just been fixing things on it.