My GF says that her 91 civic DX recently stalled at a red light. Not a problem if your car is stick, hers isn't. What could be the problem? The car has over 120g on the clock and I just replaced the muffler with a semi-performance one. She also has a Home Depot Intake (She hates the car so I'm not gonna pour money into it if she's just gonna hate it more)Any advice would be greatly appreciated. Thanks in advance.