Power loss

This problem could be the Electronic Throttle Body. It has a ' Drive by Wire' system. Also let the car idle for a while and place your hand as near as the exhaust pipe outlet as possible and check if there is any pressure coming out of the exhaust pipe. The Catalytic Converter could also be blocked. There are two oxygen sensors on your vehicle, An upstream and a down stream oxygen sensor. The upstream sensor is upstream of the CAT near the exhaust manifold and the down stream is below the CAT on the exhaust pipe end. They both feed the car's compuer minute signals of between 200 and 900 mV. The upstream signals flutcuate between these voltages and the down stream keeps a contant voltage of 5 to 800 mV. If the CAT is blocked or has two much restriction the down stream sensor will fluctuate.