Is it throwing any codes? Check engine light? If no, try running at least a half a tank of premium gas through it and, once filled at least 60% full, add a bottle of fuel injector cleaner to the tank.
Since a year ago I purchased a 2002 Corolla for my granddaughter and she is having some issues, I've just joined.
Hoping to get some insight into possible fixes for her car.
I'm in Delaware.