Shock shifting in Subaru automatic transmission
Shock shifts in Subaru automatic transmissions can be caused by various reasons. Here are the most common:
1. Low transmission fluid level:
* Check the fluid level and add if necessary.
*Low fluid levels can result in insufficient transmission pressure, causing clutch slippage and shift shock.
2. Worn or dirty clutches:
*Over time, clutches in transmissions become worn and dirty, which can cause slippage and knocking.
*Replacing clutches may fix the problem.
3. Damaged or worn solenoids:
* Solenoids regulate the flow of fluid in the transmission, changing gears.
*Damaged or worn solenoids can cause improper shifting and knocking.
4. Torque converter malfunction:
* The torque converter transfers power from the engine to the transmission.
* A faulty torque converter can cause slipping, vibration and shock during shifts.
5. Malfunction of the electronic transmission control unit (TCU):
* The TCU controls the transmission, including gear shifts.
* A faulty TCU can result in improper shifting and shock.
6. Wiring problems:
*Wiring problems can prevent the TCU from communicating with other transmission components.
* This may result in inconsistent shifting and bumping.
7. Contaminated or worn transmission fluid:
*Transmission fluid helps lubricate and cool transmission components.
* Contaminated or worn fluid can lead to insufficient lubrication and cooling, causing shifting shocks.
What to do if your Subaru automatic transmission has shock shifts:
* Check the fluid level.
*Add fluid as needed (make sure the correct type of fluid is used).
*If the problem persists, contact a mechanic for further diagnosis and repair.
*Don’t ignore shift shocks as they can damage the transmission over time.