Reasons for engine braking of an automatic transmission when releasing the gas:
* Low Gear Mode: When you release the gas pedal, the automatic transmission can shift to a lower gear to increase engine speed and increase torque. This results in a braking effect as the engine works against the inertia of the car.
* Overtake function: Some automatic transmissions have an overtake function that allows you to temporarily downshift to increase power. When you release the gas pedal after using this function, the transmission may return to its original gear, causing sudden engine braking.
*Transmission problems: A faulty transmission valve or housing can cause the gears to shift incorrectly, which can result in engine braking.
* Sensor Problems: A faulty speed or throttle position sensor can provide incorrect information to the automatic transmission, which can result in incorrect shifting and engine braking.
* Contaminated Transmission Fluid: Contaminated transmission fluid can interfere with the transmission’s hydraulic systems, which can cause improper shifting and engine braking.
*Worn transmission components: Worn clutches, bands or solenoids can reduce power delivery, resulting in engine braking.
Solution:
*Check the low gear mode: Make sure the low gear mode is disabled.
* Avoid using the overtaking function: If possible, avoid using the overtaking function to minimize sudden engine braking.
*Transmission Diagnosis: Have a mechanic diagnose and repair any transmission problems.
*Changing Automatic Transmission Fluid: Change your automatic transmission fluid regularly to ensure proper transmission operation.
*Checking Sensors: Check the speed and throttle position sensors and replace them if necessary.
*Transmission Repair: Severe transmission problems may require repair or replacement.