Q&A

I bought a 1996 Honda civic ex about 3 mths ago, ran into some problems, check engine light came on, took it to get checked and they said it was the catalytic converter. Aked a friend who said it was high grade gas i ran, need to change the spark plugs and run cheaper gas. this did the trick for a short time, then the check engine light came on again and i took it to a mechanic who said i need to run high grade gas and change my wires. did this and it was ok for 1-2 days, then the car started putt putting (literally). Took back to mechanic who said it was the wires, i got more expensive wires and the car ran great for 1 wk or so, then started again, i was told it was the wires, i needed to buy NGK wires for a Honda. I did this and now my car is worse than before. We checked the plugs and wires, could it be catalytic converter? everytime the plugs/wires are dealt with the car will run better, then goes right back to the way it was before...