Q: I have a 2001 mitsibushi galant es. when ever i hit 45 or 50 mph it jerks and sometimes when i park it just cuts off. what could be the problem??
A: Thanks for the submission Alicia. There are a few components that can cause a similar problem. One of them is a transmission issue, a part of the transmission called the torque converter is designed to “lock up” at highway speeds to help out with fuel economy. If the converter gets stuck locked on it can cause the car to stall when coming to a stop. The other main cause that comes to mind is a faulty EGR valve. This component is designed to reduce emissions when the engine is under a load, but if the EGR sticks in the open position at the wrong time it can cause a jerking condition, and or stalling concern. Is the check engine light on? If so this could narrow it down easily. The best bet in this situation is to have a technician drive the car and perform some basic diagnostic tests. Let me know what fixes it. Good Luck!