Any perceived slipping or shifting problems are not fixed by adjusting bands because there aren't externally adjustable bands to adjust. The issues stem from internal problems:
* Low Transmission Fluid: Check and top off the transmission fluid. Low fluid is a common cause of poor shifting. *Crucially*: use the correct type of transmission fluid specified for your car's transmission.
* Worn Clutch Packs or Bands: The internal clutch packs and bands wear out over time. This requires a complete transmission rebuild or replacement.
* Faulty Solenoids or Valves: Internal solenoids and valves control hydraulic pressure. A malfunctioning solenoid or valve can cause shifting problems. These are usually diagnosed with a scanner that can read transmission codes.
* Worn or Damaged Torque Converter: The torque converter can also fail, leading to slipping.
* Internal Leaks: Internal leaks within the transmission will reduce fluid pressure.
How to proceed:
1. Check the Transmission Fluid: This is the first and easiest step. Check the fluid level with the engine running and warmed up. If low, add the correct type of fluid. If the fluid is dark, burnt smelling, or contains debris, it's a strong indication of internal problems.
2. Have the Transmission Scanned: Use an OBD-II scanner capable of reading transmission codes. This can pinpoint potential problems like faulty solenoids or sensors. A more advanced scanner might even provide more detailed transmission information.
3. Seek Professional Help: If the fluid is dirty, the level is off, or the scanner reveals codes, you'll likely need a professional transmission mechanic to diagnose and repair the issue. Attempting to repair the transmission yourself without the proper tools and experience can lead to further damage and increased costs.
In short, there's no adjustment to be made; the problem needs proper diagnosis and likely a significant repair. Don't attempt any "adjustments" as you'll likely cause more harm than good.
