Possible causes and solutions to the problem of the engine stalling when the automatic transmission is engaged:
1. Dirty automatic transmission oil and filter:
* Dirty oil and filter can restrict fluid flow and create friction, resulting in vibration and jerking.
* It is necessary to replace the automatic transmission oil and filter in accordance with the manufacturer’s recommendations.
2. Faulty throttle position sensor (TPS):
* TPS tells the ECU the throttle position it needs to regulate fuel delivery and ignition.
* A faulty TPS can result in improper fuel metering and ignition, causing stalling.
* Check the TPS and replace it if necessary.
3. Problems with ignition coils or spark plugs:
* Faulty ignition coils or spark plugs can cause misfire, causing the engine to stall.
* Check the ignition coils and spark plugs and replace them if necessary.
4. Dirty injectors:
* Clogged injectors can prevent fuel from atomizing properly, resulting in poor combustion and misfire.
* Flush or replace injectors according to manufacturer’s recommendations.
5. Problems with the automatic transmission clutch:
* A worn or misadjusted clutch can cause slipping or uneven gear engagement, resulting in friction.
* Check the automatic transmission clutch and, if necessary, adjust or replace it.
6. Electrical problems:
* Faulty sensors or wiring can interfere with power or signals to the engine, resulting in stalling.
* Check wiring and electrical components and correct any faults.
7. Engine problems:
* In some cases, automatic transmission hesitation when shifting into gear may indicate more serious engine problems, such as a bad cylinder head gasket, worn piston rings, or valve problems.
* Requires engine diagnostics by a professional mechanic.