It wants to stall out when you give it gas while driving replaced fuel pump

Hello, Did you request to avoid diagnostics? Did the shop tell you why diagnostics were not performed? This vehicle needs testing conducted for vacuum leaks, fuel delivery, and the ignition system. There may be other issues, especially if the ignition system is the distributor type, but replacing parts without testing is not something trained technicians do. Bring your vehicle to a certified shop from the link below, and bring your old bill with you to the new shop. They may advise you on a course of action, but likely they will just confirm that the parts were needlessly replaced. http://repairpal.com/mitsubishi-within-10-miles-of-henderson-kentucky-42420