Reasons for automatic transmission braking when releasing gas:
1. Malfunction in the torque converter:
* Insufficient transmission fluid volume
* Clogged or worn filters
* Worn torque converter lock-up clutch
2. Transmission oil problems:
*Low fluid level or insufficient amount
* Using the wrong type of fluid
* Contaminated or old oil
3. Malfunctions in automatic transmission:
* Worn or damaged friction discs
* Clogged or worn solenoids
* Valve unit malfunction
* Incorrect fluid pressure setting
4. Electrical problems:
* Malfunction in the automatic transmission control unit
* Problems with wiring or connectors
* Failure in speed or position sensors
5. Mechanical faults:
* Differential wear
* Damage to the driveshaft
* Fault in wheels or brakes
6. Engine problems:
*Low fuel pressure
* Malfunction in the ignition system
* Worn spark plugs or coils
7. Other reasons:
* Dirty fuel filter
* Wear of the automatic transmission oil pump
* Incorrect adjustment of selector cables