Causes of automatic transmission howling when accelerating:
1. Worn transmission fluid:
* Insufficient or contaminated fluid can cause lack of lubrication and increased friction, resulting in howling.
2. Worn or damaged gears:
*Gears worn due to overuse or lack of lubrication may create noise when rubbing against each other.
3. Faulty torque converter:
* The torque converter is responsible for transferring power from the engine to the automatic transmission. A faulty torque converter can create a whine or vibration.
4. Bearing problems:
* Worn or damaged bearings can cause noise and vibration during automatic transmission operation.
5. Worn bushings:
* Bushings are used to center and support shafts in automatic transmissions. Worn bushings can cause excessive play and noise.
6. Faulty differential:
* The differential distributes power between the wheels. A faulty differential can create a whining or knocking noise when accelerating.
7. Transmission fluid leak:
* A transmission fluid leak can cause a loss of pressure and lack of lubrication, causing whining and other problems.
8. Faulty automatic transmission control module (TCM):
* TCM controls the operation of the automatic transmission. A faulty TCM may issue incorrect commands, resulting in shifting problems and noise.
9. Worn timing chain:
*The timing chain is used in some automatic transmissions to transmit power. A worn or stretched timing chain can cause noise during operation.
10. Faulty solenoids:
* Solenoids control the flow of transmission fluid. A faulty solenoid can cause improper shifting and noise.