Have you ever tried to pull away in Drive or Reverse and noticed juddering or jerking from the car? Or tried to shift down from second to first gear but found the changeover felt harsh and the gears wouldn’t engage properly? These can all be symptoms of valve issues in the transmission, as the owner of an Audi A6 recently discovered. Here is the vehicle pictured in our garage workshop.
Sometimes drivers will experience delays on gear engagement, while others may see the gearbox engaging limp mode to combat faults in the valves. Replacing these valves requires diagnostics and coding, as the physical valves interact with the wider transmission system and shifting process. Here at A1 Diagnostics we have both the tools and the expertise to handle the tech side of your vehicle’s maintenance, as well as the mechanical tasks.
The valves which influence gear changes and smooth driving experience sit within a car’s transmission unit. Repair and/or replacement of these valves necessitates the removal of the whole unit, which can either be replaced as a whole or deconstructed to replace only the faulty parts.
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First the transmission must be drained of all fluid, before the transmission oil pan can be disengaged. Then the internal wiring needs to be disconnected, including the safety clips, so that the valve body can be accessed and removed. These units are heavy, so our team at A1 Diagnostics makes sure the right kit is in place to make these removals safe as well as successful.
Once the unit is removed, the valve body itself can be replaced, and the seals and gaskets nearby can be checked for wear and tear at the same time. All of these parts work together, so it’s important to make sure they’re all functioning at optimum capacity.
After the repairs and replacements have been completed, the unit can be returned to the car and the surrounding wiring reattached. The transmission fluid can be replaced – checking for leaks in the system at the same time – after which the mechanical tasks are complete.
Diagnostics are then run on the unit and car as a whole to make sure the new parts are performing as required. Software adaptation, updates and new coding can sometimes be needed so each part is talking to each other correctly; our mechanics are fully trained on all these processes and our Audi A6 was soon up and running again.
If you have any concerns with your vehicle’s transmission or valve performance, get in touch with our team at A1 Diagnostics today.
