So I went on a week long road trip to LA with my daughter in her car because she didn't want to sit in a Crossfire that long. I get back and drive the Crossfire for a day or so and everything is fine, but then I take it to my local mechanic to repair the seat not wanting to change position so they replace the power relay switch. About 30 minutes after I pick it up it starts hesitating when I accelerate and wanting to stall at lights and stop signs. This has never happened before so I call the mechanic but he says they only worked on the inside of the car so couldn't be related to the repair. Weird coincidence though! Any ideas? First thing I checked was that my gas receipt said Super just incase I made a mistake and put in regular unleaded. Thanks in advance!