Wife filled up her car this morning at the cheapest place in town.

Later we went to the store and the car started running rough with the engine light blanking. I pulled over and gave it some gas in park. The motor just tached up and down like it wasn't getting fuel. We stopped at the local mechanic/ tire shop before they closed and got a computer reading which said multiple cylinder misfire. Then the engine light went out and all was well so they test drove it and all was good. Before we made it home it started acting up again.