I have a 98 f150 with 212xxx miles. I just had new plugs and wires put on a few days ago. It had a misfire when I bought it due to bad plugs and a few bad wires. Ran fine yesterday when I brought it home and then today on my way home from work it started idling rough and the engine light started blinking. I know a flashing light usually means a misfire but if I just had it done what else could it be? I had a code for a o2 sensor and my cat but didn't think that my cat would go this fast.....

 

Please read out the codes and post the exact code numbers.