Mechanics

HI, I HAVE A 1.8L WITH 266K MILES AND MISFIRING ISSUES UNDER LOAD. ONE DAY SHE THREW ENGINE CODE FOR IAT, FEW DAYS LATER, EGR VALVE, THEN A FEW DAYS LATER I GOT RANDOM MISFIRE ALL CYLINDERS. I HAVE REPLACED EGR, IAT, FUEL FILTER, PLUGS

1996 Toyota Corolla • 266,000 miles