Possible reasons why the automatic transmission releases oil through the breather:
1. Excessive pressure in the gearbox:
* Faulty oil pump or pressure relief valve
* Clogged oil filter
*Low transmission fluid level
2. Malfunctions in the automatic transmission cooling system:
* Clogged automatic transmission radiator
* Faulty thermostat
* Faulty automatic transmission temperature sensor
3. Internal damage to the automatic transmission:
* Worn or damaged gears, bearings or shafts
* Worn or damaged seals and o-rings
* Torque converter problems
4. Incorrect transmission fluid level:
* Overfilling or underfilling liquid
* Using the wrong fluid (not meeting manufacturer specifications)
5. Malfunctions in the automatic transmission vacuum system:
* Faulty vacuum modulator
* Vacuum leaks in tubes or connections
6. Problems with the automatic transmission housing:
* Crack or deformation in the gearbox housing
* Worn or damaged gaskets or seals
7. Malfunctions in the automatic transmission control system:
* Faulty electronic control unit (ECU)
*Wiring problems
What to do if the automatic transmission releases oil through the breather:
1. Check the transmission fluid level.
2. Check the condition of the oil filter.
3. Inspect the automatic transmission cooling system for leaks or blockages.
4. Identify and repair possible internal damage to the automatic transmission.
5. Repair leaks in the vacuum system.
6. Check the automatic transmission housing for damage.
7. Check the automatic transmission control system for malfunctions.
Important: If the automatic transmission spews oil through the breather, you must immediately seek professional help from a mechanic. Continuing to drive with this defect may result in serious damage and costly repairs.