- One possibility is that the idle air control (IAC) valve is faulty. The IAC valve is responsible for regulating the amount of air that enters the engine at idle, and if it is not functioning properly, it can cause the engine to stall when it is put into gear.
- Another possibility is a problem with the throttle body. The throttle body is responsible for controlling the amount of air that flows into the engine, and if it is dirty or damaged, it can also cause the engine to stall.
- A faulty fuel pump or a clogged fuel filter could also cause the engine to shut off when put in gear. These components are responsible for supplying the engine with fuel, and if they are not functioning properly, the engine will not be able to get the fuel it needs to operate.
- A problem with the ignition system could also be the cause of the issue. The ignition system is responsible for providing the spark that ignites the fuel in the engine, and if there is a problem with this system, the engine will not be able to start or stay running.
- A faulty transmission control module (TCM) is another possible cause. The TCM is responsible for controlling the transmission, and if it is not functioning properly, it can cause the engine to stall when it is put into gear.
- Finally, a low battery can also cause the engine to shut off when put in gear. This is because the battery is responsible for providing the electrical power that the engine needs to operate, and if the battery is not providing enough power, the engine will not be able to start or stay running.
