comprehensive Extended Warranty? Is the Catalytic Converter considered wear and tear? or is this something I can expect to be fixed as it should? I JUST PICKED UP MY VEHICLE TODAY FROM A 1500 DOLLAR TIMING BELT JOB and the car suddenly began to sputter and shake lightly while the check engine light started flashing. Car has 83000 miles, and is under warranty until 90,000. What would one expect?