1. Low idle speed: If your car's idle speed is too low, it may not be able to generate enough power to move the vehicle when it is in gear. This can be caused by a variety of factors, such as a dirty throttle body, a faulty idle air control valve, or a vacuum leak.
2. Clutch problems: If your car has a manual transmission, the clutch may be slipping or not engaging properly. This can prevent the engine from transferring power to the wheels, causing the car to stall when it is put in gear.
3. Transmission problems: If your car has an automatic transmission, there may be a problem with the transmission fluid, the torque converter, or the valve body. This can prevent the transmission from shifting properly, causing the car to stall when it is put in gear.
4. Engine problems: If the engine is not getting enough fuel or air, it may not be able to generate enough power to move the vehicle when it is in gear. This can be caused by a variety of factors, such as a dirty air filter, a faulty fuel injector, or a vacuum leak.
If you are experiencing this issue, it is important to have your car diagnosed by a qualified mechanic to determine the cause of the problem and have it repaired.
