Possible causes of delays when shifting gears in an automatic transmission in a Mazda:
Mechanical:
* Wear of friction discs or steel plates
* Problems with gear shift solenoids
* Problems with valve body
* Insufficient oil pressure
* Oil filter clogged
Electrical:
* Gear shift sensor malfunction
*Wiring problems
* Malfunction of the electronic transmission control module (TCM)
Transmission Fluid:
*Low fluid level
* Contaminated or old fluid
*Inappropriate fluid type
Other:
* Worn or damaged gear selector cables
* Engine control module (ECM) malfunction
* Problems with the driveshaft
Possible solutions:
* Replacement of worn components: friction discs, steel plates, solenoids, valve body, etc.
* Electrical wiring repair: Checking and replacing faulty wires and connectors.
* Sensor replacement: Replacement of faulty gear shift sensors.
*Transmission Fluid Change: Check fluid level, replace filter and fill with recommended fluid.
*ECM or TCM Repair: If these modules fail, they may need to be reprogrammed or replaced.
* Check and adjustment: Check and adjust the gear selector cables.
Note: Diagnosing and repairing automatic transmissions can be complex, so it is highly recommended that you contact a qualified mechanic to properly diagnose and repair the problem.