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: Panel Maintenance
If a panel becomes soiled, wipe it off with a soft cloth soaked in clean water and thoroughly wrung out. If some areas require further cleaning, use the following procedure: 1. Wipe the soiled area with a soft cloth soaked in a mild detergent (approx. 5 %) diluted with water. 2. Wipe off the ...

Mazda 6 Service Manual: Dual proportioning valve replacement (without abs)
1. Remove in the order indicated in the table. 2. Install in the reverse order of removal. Dual Proportioning Valve Installation Note Install the dual proportioning valve so that the R mark faces the left side of the vehicle. ...