Possible reasons for automatic transmission failure during acceleration:
Mechanical:
* Wear of friction discs
* Coking of solenoids
* Contamination of transmission oil
* Torque converter wear
* Problems with wiring or sensors
Electronic:
* Transmission Control Module (TCM) malfunction
*Speed sensor malfunction
* Malfunction of the throttle position sensor
* Software problems
Other:
*Low transmission oil level
* Clogged oil filter
* Incorrect throttle cable setting
Possible solutions:
1. Check the level and condition of the transmission oil. Replace the oil and filter if necessary.
2. Scan the vehicle for fault codes. This could indicate faulty sensors or problems with the TCM.
3. Check wiring and connections. Make sure all wiring harnesses are securely connected.
4. Reset transmission adaptations. This may solve shifting problems caused by a computer malfunction.
5. Check the throttle cables. Make sure they are adjusted correctly and move freely.
6. Contact a mechanic for further diagnosis. They may need to rebuild or replace the transmission depending on the severity of the problem.
Additional tips:
* Do not continue to drive a vehicle with transmission leaks as this may cause further damage.
* Use manual transmission mode or ‘overdrive off’ mode to minimize dips.
*Service the transmission regularly according to the manufacturer’s recommendations.