Mazda 6 Service Manual: No.7 slow return to idle

No.6 cranks normally but will not start

No.8 engine runs rough/rolling idle

Other materials:

Mazda 6 Service Manual: Operation
NOTE The engine may not start and security indicator light may illuminate or flash if the key is placed in an area where it is difficult for the system to detect the signal, such as on the dashboard or in the glove compartment. Move the key to a location within the signal range, switch ...

Mazda 6 Service Manual: Input/turbine speed sensor removal/installation
1. Disconnect the negative battery cable. 2. Remove the battery and battery tray. 3. Remove the air cleaner component. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION.) 4. Disconnect the input/turbine speed sensor connector. 5. Remove the input/turbine speed sensor. 6. Apply ATF to a new O-ring ...