Ok so as you can see Im very new to your forum here, but hopefully there is someone that can help me (i hope this is in the right place).

My wifes car is a 2001 Eclipse RS, well it threw a code the other day P0303, which we know is #3 Cycl misfire. So I did what to me seemed logical at the time, I replaced the plugs and reset the computer. well now its acting all up again. The light hasnt came back on but Im sure it will within the next day or two.

Heres my question, if it does indeed throw the same P0303 again where should I go from there? Should I replace the wires and reset again? Please Im not the most mechanically inclined, Im just a dumb stunter - please any help is appreciated....

 

I would have done the plugs and wires together anyways. Yeah try changing the wires next and since you've reset the ECU did you try driving at 40 MPH for a decent distance to get the car to reset the sensors?

 

how many miles are on it... I would do the wires anyways.

does it have any type of aftermarket performance?

 

its got about 75000 miles on it......no aftermarket parts. I went and replaced the coil pack that sits above #3 and it still rides like crap.....thats if I replaced the right one....I went to the third one starting from the right. My wife is still driving it to work and the light hasnt came back on yet

 

did you replace the wires yet? Cuz that could be it.

 

I went and replaced the coil pack that sits above #3

that is the same as replacing the wire just for the one throwing the code

 

what exact problems are you having with the car? my SES light is on but I feel no problems with the car. therefore, i am not worrying about that damn light.