don't make any exhaust mods on this vehicle, they are very sensitive to the check engine light, ex replacing the header with an aftermarket/performance one and for that reason you will fail the great emissions test in Ontario. On my previous 98 Civic with no mods I had the 02 sensors replaced however, the problem remained with the check engine light. Usually a sign of a failed catalytic converter and unlike the Civic SI, the CX DX AND LX models have a header and catalytic converter all in one and they are expensive to replace, and you are taking a gamble again by buying a used one which of course is always cheaper to do.

The other night I was on the way home from work in my 1998 Honda Civic Coupe EX (124000 mi and i bought it used from the dealership about a month ago), and the check engine light came on. Me being 16 almost 17 i took this seriously and the next morning i got up early so i could have it looked at before work and my dad and i went over to the dealership(in separate cars cuz i knew it would take a while and i needed to get to work). they inspected it and said it was the oxygen sensor that was dead(o2 sensor). well the total cost of fixing it was 370$. there went my two paychecks for the last two weeks. But wait theres more! Today i was on my way over to the gas station, and the check engine light was back! Before i take this car back to the dealership to have it looked at again and possibly another ass load of a money payment, please help me!!!!

So you can understand my frustration, i haven't even had the car back a whole day from the dealership and the check engine light came back on. After i spent 370$ to have myself some confidence in my car and to make the light go away, its back. If you know ANYTHING PLEASE HELP ME!!!!!!!!!