Mazda 6 Service Manual: No.20 noise occurs at idle when vehicle is stopped in all positions/ranges

No.19 excessive shift shock on torque converter clutch (tcc)

No.21 noise occurs at idle when vehicle is stopped in d, s, l ranges, or in r position

Other materials:

Mazda 6 Service Manual: General procedures
PRECAUTION (FRONT AND REAR AXLE) Wheel and Tire Removal/Installation 1. The removal and installation procedures for the wheels and tires are not mentioned in this section. When a wheel is removed, tighten it to 88-118 N·m {9.0-12.0 kgf·m, 65.0-87.0 ft·lbf} Brake Line Disconnection/Connecti ...

Mazda 6 Service Manual: Water pump
1. Disconnect the negative battery cable. 2. Drain the engine coolant. (See COOLING SYSTEM SERVICE WARNINGS.) (See ENGINE COOLANT REPLACEMENT.) 3. Loosen the water pump pulley bolt to remove the drive belt. (See DRIVE BELT REPLACEMENT.) 4. Remove in the order indicated in the table. 5. Insta ...