How do you replace a etc sensor in a Mazda rx8?

To replace the ETC (Electronic Throttle Control) sensor in a Mazda RX-8, first disconnect the negative battery terminal for safety. Locate the sensor on the throttle body, then remove the wiring harness connector and unscrew the sensor from its mounting. Replace it with the new sensor, reattach the connector, and reconnect the battery. Finally, ensure the throttle system is calibrated properly, if necessary, before starting the vehicle.