My Sister's Camry 2001 4 Cyl. was running rough, and wanted me to look at it. I told her I would start with replacing the spark plugs and fuel filter, the filter has never been changed and the plugs looked worn. She has 69,000 on the car. She never mentioned the engine light was on until after I worked on it, but I never paid attention if the light when I was working on it. I have a code reader, and it had 4 codes in the system. P0300, P0301 (twice), and P0304. I can't believe changing plugs and fuel filter would make the light go on. Does the 2 plugs share the same coil? Did changing the fuel filter, plug up the fuel ejectors more? There was a problem before, but maybe replacing some parts, made the part going bad weaker? Thanks for any help.
- posted
17 years ago