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: Nonreturn valve inspection
1. Remove the fuel pump unit. (See FUEL PUMP UNIT REMOVAL/INSTALLATION.) 2. Siphon the fuel from the fuel tank. Note Nonreturn valve is integrated in the fuel tank. The nonreturn valve is normally closed by the spring force. 3. Verify that the nonreturn valve is closed. If the nonretu ...

Mazda 6 Service Manual: Front/rear abs wheel-speed sensor inspection
Visual Inspection Remove the wheel and tire, and inspect the sensor for looseness and damage. Replace the sensor if necessary. Clearance Inspection Inspect the clearance between the wheel-speed sensor and the sensor rotor. Clearance 0.3-1.1 mm {0.012-0.043 in} Resistance Inspection ...