The most common problems with automatic transmissions

Automatic transmissions tend to have a limited range of problems affecting them, compared to engines that seem to have an endless list of things that can go wrong. That is, transmission problems tend to be limited to not being able to shift the selector to any gear, not being able to move it into certain gears, having a delayed or choppy gear shift, unusual noises heard during gear changes, slipping where the The engine revolutions increase without any increase in engine speed, and finally, when the vehicle can move with it, it is in park or neutral position.

The inability to select gears is most likely a problem with the transmission fluid. Either there is not enough fluid in the system, or there is a problem with a faulty oil pump or an old, clogged oil filter. Routine and proper transmission fluid service should solve the problem, and this should be done no less than every thirty thousand miles; every twenty thousand miles is better.

When there is a delayed reaction to the effect of selecting a gear, this may suggest problems with the computer controls, or the solenoids and spring loaded dampers called computer controlled actuators and is more likely to require the services of a professional. with specialized diagnostic team to fix the problem. If the vehicle starts suddenly and violently, these are most likely the spring-loaded actuators at the center of the problem.

Skidding is easy to detect because it is quite noticeable that when you step on the accelerator, you can hear the increase in engine revolutions, but there is no acceleration from the vehicle; no sensation of increased power at the wheels. This can be a low fluid situation, and it is advisable to check the transmission for its color. A good clean transmission should be a shade of red, and if it is dark or blackened then it has become contaminated by component wear. The dark colored fluid is most likely caused by the internal clutch mechanism or the locks being out of adjustment, causing them to slip and wear rather than provide traction. This can quickly lead to very expensive repairs being needed if not caught early enough. Urgent service should be sought if this is detected, and no heavy trailer should be lowered while the vehicle is in this condition. Slippage can quickly lead to a total burnout of the clutch and prohibits the mechanisms, leading to the need for a replacement transmission.

Lastly, difficulty selecting low or reverse gears can likely point to torque converter problems. It is a clutch that can only allow movement in one direction and if it is not working properly it will most likely not allow selection of low gear or reverse.

Of course, there is always the possibility that one of the gears has been disassembled.