Why doesn't my car shift

Gearbox damage

Gearbox damage: signs, causes and repair in the workshop

Gearbox damage is one of the most complex and expensive repairs for most cars. Incorrectly carried out gear work, too low gear oil level as well as unsuitable gear oil can cause extensive gear damage. If the transmission no longer shifts up or a - usually lower - gear can no longer be easily engaged, expert help should be sought. The specialist workshop is usually the only sensible address here if the vehicle is to have many years ahead of it. Find out here the causes and signs of gearbox damage, when it is worth replacing and what it costs to change the gearbox in your car. At FairGarage you can find competent workshops in your area and arrange the right appointment online.

When the replacement of the gearbox is worthwhile

The high repair costs result from the enormous price for a new gearbox. Together with the engine, it is one of the two most expensive items on the list of typical repair tasks. It is usually worth changing if the gearbox is damaged. Provided that the cost of repairing the damage does not exceed the value of the vehicle. The fully comprehensive insurance does not cover the high costs. The workshops that can be found on FairGarage change the gearbox with a new or exchange part.

Signs of gear damage

The main signs of transmission damage include:

  • Clacking or rustling noises from the transmission;
  • Jerking of the vehicle;
  • Unstable gear shifting, in which the gear jumps out again and again;
  • No frictional connection of the engine despite an engaged gear;
  • The gearshift lever cannot be moved from one position to another, or it is difficult to move it.

Causes of the transmission damage

There are several reasons for transmission damage - human or technical, or sometimes a combination of both. Frequent causes of gear damage are material defects or thermal overload. That doesn't have to have anything to do with the driving style, it is often down to the car manufacturer itself. If these parts are of below-average quality, this can lead to damage in the transmission in the medium to long term. But the way the owner handles it can also affect the transmission. An incorrect oil level or placing it on the ground will damage the gear unit.

Common causes of gearbox damage are:

  • Thermal overload
  • Incorrectly carried out gear assembly
  • Gear oil level too low, unsuitable gear oil
  • Defective or worn individual parts of the gearbox (gearbox bearings, synchronizer rings, idler gear, shift sleeve, synchronizer body, etc.)
  • Leaks in housings or radial shaft seals
  • Punctured or damaged gear housing

History of transmission damage

There are many causes of transmission damage, some of them protracted. For example, wear and tear due to high loads (driving uphill, intensive trailer operation) is common. Where repairs to the clutch and shift linkage are delayed, the gears in the transmission also suffer. Unusual noises or jerky switching should be answered immediately with an appointment at the specialist workshop. The online service is of great help here if the problems arise outside of normal workshop hours. At FairGarage you can find your dream workshop around the clock and book the right appointment right away.

In some cases there are big differences

However, the subject of gearbox damage in particular has to be assessed very differently from car to car. There are, for example, simple VW Golf petrol engines from the 1980s where the gearbox can be separated from the engine block with a few screws and another one can be reinstalled. So if you notice signs while driving that the transmission is no longer shifting, then you don't have to despair immediately. A knowledgeable hand is required here to find a suitable used transmission. With a Ferrari of about the same age, however, the cost of a gearbox can be beyond your imagination.

A new transmission is also worthwhile for old cars

If the transmission is found to be defective, the cost of repairs also depends on the size of the vehicle and its age. In the 1990s, complicated automatic sports transmissions à la Formula 1 also became increasingly popular in small cars. Today, small cars with 8-speed dual clutch transmissions are no longer a surprise, unless the transmission no longer shifts. Age does not have to be an obstacle to repairing the damage. Experience has shown that a new transmission can harmonize well and permanently with the rest of the vehicle train. It is not uncommon for the second transmission to outperform the first and no longer need to be replaced.