1993 Isuzu Trooper 3.2 mileage: 97,000. My service engine light was always coming on but nothing appeared wrong with the vehicle. My gas pump and oxygen sensor had just been replaced, my oil changed and my charging system checked. My mechanic said that it appeared that I needed to replace my modulator but rigged it so it would work okay for a while. Will this hurt the vehicle? How important is this modulator?
Tuesday, November 9th, 2010 AT 7:45 PM