How to troubleshoot the automatic transmission?

According to the online economy report, gearboxes are divided into two types, manual or automatic. In automatic transmissions, there is no need to change gear by the driver and this is done automatically by the gearbox itself.

But if these gearboxes have problems, how should we find out the cause of these problems and how to fix them? Repairing these automatic transmissions is a concern that does not leave anyone who has an automatic car. Stay with us to know about these things.

Automatic gearbox

The automatic transmission receives the power from the car engine and by increasing the power or the first gear, or increasing the speed, the fifth gear is transferred to the differential and the wheels.

The different parts of the automatic transmission are as follows:

Torque converters

Central computer, electric valves

Automatic transmission clutch

Automatic transmission gears

How does an automatic transmission work?

In the first stage of starting the automatic transmission, mechanical power is taken from the engine and transferred to the transmission by means of torque. Then the force received from the torque drives the input shaft of the gearbox.

This system consists of an electric controller and several gears that are located in a housing. The central computer inside the gearbox is responsible for changing gears. But repairing these gearboxes has many complications due to their high sensitivity.

The difference between manual and automatic transmissions

One of the most obvious differences between these two gearboxes is the absence of a clutch in automatic gearboxes. For this reason, there is no need to change gears manually in these cars. At first, you can set the gear mode to Drive so that the car does the rest.

But in order to keep these gearboxes healthy, what should be done?

If you ignore any of these points, you will definitely face problems:

Always try to change the oil of automatic transmission engines on time. If the oil no longer has the necessary efficiency, it will put more pressure on the system, and as a result, this will lead to an increase in water temperature and water ampere. Note, the role of oil is to lubricate and ease the friction process between different components of the gear wheel. If you don’t replace it on time, you will have to replace the entire gearbox after a while.

Try to always use oils that are standard. Try to use engine oil that is specific to your car. Note that the temperature of the engines may be different from each other, as a result the viscosity of the oil can also vary.

Apart from changing the oil regularly, it is better to perform the periodic service of your gearbox regularly. Try to use centers that have sufficient expertise in this matter.

Try not to shift your gearbox while driving. The different modes of the automatic transmission are changed mechanically, which is done by a number of clutches and bands that are located inside the gearbox. Shifting while moving can cause high friction in the transmission.

Try not to drive distracted. These machines are designed in such a way that they can use less fuel in downhills.

Try not to select the drive mode when you are gassing. Selecting D mode and pressing the gas pedal will cause irreparable damage to your car

Do not select park mode until it comes to a complete stop.

How to troubleshoot automatic transmission

Troubleshooting for automatic transmission repair

One of the reliable ways to diagnose the fault of an automatic transmission is the automobile road test. Do not forget that the tips given by the driver can also help to diagnose the fault. But the road test should be done by the repairman himself with different engine revs and different speeds.

After the repairman succeeds in diagnosing the engine fault with the road test, it is time to open the gearbox and start troubleshooting by disassembling it.

At the beginning, the repairmen try to wash the parts of the gearbox, then they check the different parts, if a part needs repair, they repair it. If needed, they replace it and replace the new part.

Now if you decide to troubleshoot yourself, what should you do?

The car’s solenoid valve may be weak or damaged.

May indicate oil change time

The oil pressure may be lower or higher than the specified limit.

Now, if the gearbox hits when changing gear from 1 to 2 or 2 to 3, it means that the driver may have pressed the gas pedal irregularly and unbalanced for some time. If you don’t press the pedal appropriately, you will cause the gearbox to make an incorrect analysis and change the gears incorrectly, as a result, this will happen over time.

But if this problem is due to a technical defect, it indicates that either the gearbox oil level is low, or the gearbox settings have become invalid for the following reasons:

You have driven in d mode during traffic

The temperature of the gearbox has increased.

The solenoid valve is broken and the oils are leaking from the clutch.

If your car is in d mode and it does not move as much as you step on the gas pedal, one of the following reasons may have occurred:

Or your transmission oil filter is clogged, in which case if you turn the car off and on, it will travel a short distance, but it will happen again.

Either the transmission clutch or the bands are worn out, which indicates that your vehicle has been misused.

If the situation does not change by moving the automatic gear lever or the lever, the cause is usually the failure of the multi-function switch or gearbox selector, which occurs due to contact with water. It is also possible that one or more pins are taken by dirt.

If your transmission does not shift when you accelerate and stays in first gear, it is possible that one of the following has happened:

You drive in heavy traffic or steep hills, turning off and cooling the engine will solve this issue.

There may be a malfunction in the engine cooling system or the level of coolant in the tank is low, which you should fix as soon as possible.

Maybe due to clogging of the gearbox strainer, the temperature has risen and the gearbox oil circulation has been disturbed. This happens in the context of more than a hundred thousand kilometers, but if these cases have not occurred, you should consult an expert.

What does it indicate if the gear lever is locked in P position? If the car’s switch is left open in the p position, after a few minutes out of the park mode if you press the brake twice, and this situation is resolved, it is normal and is installed mostly for safety. But sometimes it gets stuck in P position and even the driver can’t get it out of this mode after braking several times. This problem does not cause a problem for the operation of the gearbox, but you should try to fix it. Be sure that you can fix it in a short time with little cost.

final word

Automatic transmissions, which are mostly designed for ease of driving, eliminate the need for a clutch in cars that use this type of transmission. Also, you don’t need to change gear in your car, but the gearbox itself is designed in a way that does this for you. This is the main difference between automatic transmissions and manual transmissions.

But don’t forget that in order to extend the life of your automatic transmissions, you must observe some things and definitely avoid doing some things. Otherwise, you will cause irreparable damage to your gearbox.

Always try to change the oil of automatic transmission engines on time. Try to always use oils that are standard. Try not to drive while sober. Do not select park mode until it comes to a complete stop. Apart from changing the oil regularly, it is better to perform the periodic service of your gearbox regularly.

Now, if your car’s flashing light comes on, or your gearbox knocks when you change gears, if the car does not move as much as you press the gas pedal, it is one of the problems that you can find out by referring to the above article, and if If you were able to repair it, take action. But the best way is to refer to experts who are skilled in this matter. They will also understand better what is wrong with your automatic transmission by road test. After opening the parts and washing them, they will repair or replace the part.