Possible reasons for the lack of gears in the automatic transmission of Volkswagen Golf 3:
Mechanical problems:
* Worn or broken friction discs
*Damage to planetary gear
* Torque converter malfunction
* Leaks in the hydraulic system
* Oil filter clogged
*Low transmission fluid level
Electrical problems:
* Malfunction of gear selector position sensors
* Electrical wiring problems
* Failure of the electronic control unit (ECU)
Hydraulic problems:
*Low transmission fluid pressure
* Oil pump malfunction
* Clogged hydraulic lines
Troubleshooting steps:
1. Check the transmission fluid level: Low fluid levels can cause problems with shifting.
2. Check the oil filter: A clogged filter can restrict fluid flow, leading to automatic transmission problems.
3. Scanner Diagnostics: The scanner can detect trouble codes that indicate the source of the problem.
4. Mechanical Inspection: Remove the automatic transmission to inspect and identify mechanical problems.
5. Troubleshooting and Repair: Replace faulty parts, clean hydraulic components and repair any electrical problems.
6. Checking the automatic transmission: After repair, test the automatic transmission to ensure its serviceability.
Important: If the automatic transmission is missing gears, avoid driving the vehicle as this may cause further damage. Have the problem diagnosed and repaired by a qualified mechanic.