Updated at: 10-08-2023 - By: Lucas

Changing gears is one of the most typical issues you’ll encounter while driving a car. When moving from 1st to 2nd place, this is a common occurrence. That doesn’t imply manual vehicles don’t have the same issue, but it is more common in automatic automobiles.

Why does my gearbox change so forcefully from 1st to 2nd gear? There are several probable answers to this query. For the most part, immediate action is required to prevent further injury. While fixing some of these issues is simple, others are more difficult.

Why Does An Automatic Transmission Shift Hard From 1st To 2nd?

Why Does My Transmission Shift Hard From 1st To 2nd.

Manual and automatic transmissions don’t share the same set of problems. Both are based on similar concepts yet operate in very distinct ways.

Why does my gearbox shift from first to second gear so hard? Here are some possible explanations.

Contaminated Transmission Fluid

Transmission oil contamination is one of the most common reasons of transmission lag. If the liquid is clear, you should expect the transfer to go smoothly and quickly.

Check the gear oil first if you’re having issues shifting gears. Clean up after yourself. Transmission fluid comes in a variety of hues. Make sure it’s the color the manufacturer had in mind when they made it.

Transmission fluids are typically green, blue, reddish, or yellowish in appearance.

The transmission fluid level in your car can potentially pose a threat. Due to a lack of maintenance or a leaky seal, your transmission fluid may not be up to par. You can tell if your transmission has a leak if the fluid level is constantly low.

Why does my transmission shift so hard from first to second gear? If the fluid level is low, the transmission system will not be lubricated effectively, which could be the answer to your concern.

Malfunctioning Or Damaged Sensors

Computers currently control the vehicle. Every aspect of your vehicle is now controlled by a computer that receives a signal and informs your car what it should perform. All of these new developments in technology, however, come with their own set of problems.

Sensors for a variety of purposes are now included in the design of driverless cars. Multiple sensors help automatic transmissions shift gears more smoothly. Signal interaction is how this sensor does its job.

As a result, if something goes wrong with your car’s computer system, it’s possible that the transmission is to blame.

The transmitting process is halted by a malfunctioning sensor. Having an issue with your vehicle’s transmission system could lead it to malfunction.

You should seek the help of a specialist who can fix sensor problems and assure the optimal operation of your car because they are quite difficult to repair. Except if you’re an expert in this field, there’s no way you can fix it without causing further harm.

Transmission Fluid Leak

Transmission shifting can be sluggish if there is a fluid leak. Transmission fluid is required for the sealed transmission system to work.

Because of this, if the transmission fluid is leaking, you may notice a hard change between gears. Keep in mind that leaks in a car are extremely dangerous and can put your vehicle out of service if they aren’t fixed.

You should initially examine your pan, gasket, and other components if you suspect a leak. There may be a transmission fluid leak if you see any of the following:

A mechanic should be consulted if you see a puddle under your automobile, and if your transmission is shifting hard, you should also have your gearbox checked out.

Transmission Vacuum Moderator

Vacuum hoses with various purposes are known as transmission vacuum moderators, and they can be found in numerous varieties on the market. The vacuum moderator’s role is to keep tabs on the machine’s load.

When the throttle plate of your combustion cylinder is under a lot of pressure from your transmission, this function is activated.

The transmission is shifted by applying pressure to the vacuum moderator. When you get the correct amount of pressure, this helps you shift gears smoothly.

There are several reasons why moving from 1st to 2nd is difficult, but one of the most common is because one of your vacuum lines is leaking.

Torque Converter

In between the engine and the transmission, the torque converter is positioned The torque converter converts the engine’s power to the wheel’s torque. A polluted or low-quality transmission fluid might cause the torque converter to behave abnormally because it is filled with this component.

However, a torque converter that has been damaged or malfunctioned may act strangely at times. Having a transmission fail as a result of this might be dangerous. A new torque converter is required if this occurs.

Damaged Shifter Cable

A cable is used to link the transmission to the switch in most automatic autos. The cable’s construction ensures that the chosen gear can only be selected if the needle reads correctly. It will be difficult to move a transmission cable that has been damaged or broken.

The shifter cable may be faulty, causing your gearbox to change erratically from first to second gear. Make any necessary adjustments or replacements as soon as possible.

By loosening the mounting nut, you can spin the adjustment barrel clockwise to put greater pressure on the transmission solenoid.

Adaptive Transmission

Adaptive transmissions present a unique challenge for those who drive them. Adapting gearshifts based on your driving style and fluidity is made possible by the intelligent device.

The engine speed is controlled by a computer in this transmission so that it doesn’t surpass the transmission’s stopping speed. An incorrectly calibrated computer can make it difficult to shift gears while using adaptive equipment.

Sensors in self-driving cars keep tabs on your habits while you’re behind the wheel. Your transmission oil is inspected, as is your driving style, to ensure that the vehicle’s performance is in line with industry standards.

When you change your driving habits or your transmission fluid, your car reverts back to its old behaviors. You’ll have trouble shifting from first to second gear at this point.

You’ll need to take your vehicle to a skilled mechanic to have the transmission reset in order to fix this issue. There is nothing you can do about this unless you are a trained mechanic.

Cold Weather

It’s not unusual for folks who live in frigid climates to have difficult weather shifts. This is due to the thickening of the oil and transmission fluid in cold weather, which causes the gears to squeal. A high-quality synthetic fluid can easily solve this problem.

Why Does A Manual Transmission Shift Hard From 1st To 2nd?

Why Does My Transmission Shift Hard From 1st To 2nd

Like an automatic transmission, a manual transmission might have the same problem. Even though the issue is the same, the underlying causes may be distinct. Is your manual car making it difficult to shift from 1st to 2nd gear? The answer is yes, and you should pay attention.

Clutch System

When it comes to efficient transmission, the clutch system plays a key role. A stomp on the clutch pedal causes pressure to be transferred to the clutch master cylinder to place the car in neutral and prevent power from being transferred. This allows the user to shift gears manually.

Class release and master cylinder leaks or damage make this process more difficult to do.. This is due to a drop in fluid pressure, of course. To engage and deactivate the manual transmission, you don’t obtain enough pressure.

Take your car to a mechanic who is familiar with these kinds of issues if you discover that this is what is going on. Expert mechanics have access to breakdowns and can offer the best course of action. Repairing or replacing the clutch master cylinder could be necessary.

Bad Gears

Transmission gears, which are responsible for a smoother ride, can wear down and be damaged over time.

The fact that these gears are built to last a lifetime doesn’t mean that they’ll always turn smoothly. Taking apart the transmission and inspecting the gears is the only way to figure out what’s going on here.

You should check to see whether your gearbox is shifting hard from first to second because of a separate issue before you proceed. Rebuilding a transmission can be extremely expensive.

Lack Of Gear Oil

GEAR OIL is used to keep the gears moving smoothly, as opposed to Gearbox OIL, which is used to lubricate an auto transmission. Transmission issues can arise if the gear oil is leaking or hasn’t been replenished in a long time.

Changing the oil and using high-quality, long-lasting gear oil are the only solutions to this problem.

Damaged Gear Hub Sleeve

It is possible to transfer motion from one gear to another with the use of a geared hub. To make certain that the hub’s gear movement is in time with the synchronization, this test is performed. When the sleeve is on, the movement is jerky and might lead to displacement issues.

Another well-known problem is this one. There is a good chance that this is the answer you’ve been seeking.

Transmission Slipping

If you try to slow down while your manual transmission is slipping, your engine’s RPMs will rise. When motorcyclists shift into ratios that are too low for the resistance they are encountering, this happens.

This resistance is mostly absorbed by your car’s clutch. Clutch replacement is necessary if your transmission often slips.

Damaged Synchronizer Ring

The hub shell is connected to the synchronization ring, which guarantees smooth shifting. Synchronization errors can lead to inconsistent speeds and sluggish switching.

Slippage in changing from first to second gear might be caused by a damaged synchronizer ring in your manual transmission. The sync rings may need to be serviced if shifting becomes a challenge at times.

How To Replace Transmission fluid?

Why Does My Transmission Shift Hard From 1st To 2nd-1

Transmission difficulties, such as jerking when shifting from 1st to 2nd gear, are most often caused by low fluid levels in the system as a result of leaks or contamination.

Most of the time, when people complain that their transmission shifts from first to second too quickly, we find this. Flushing the transmission fluid is necessary when the fluid is low or polluted, so that you can drive again.

Here’s a step-by-step guide on cleansing out your transmission fluid.

Step 01

Removing the negative terminal of your battery will render it inoperable, so be sure to do this every time you perform any engine block maintenance to avoid any unpleasant surprises.

And because your safety is a top priority, you should keep this in mind at all times.

Step 02

The output line should be removed by carefully removing the screws and by using the suitable screwdriver kinds while you slide under your vehicle.

Your vehicle service manual can help you determine which tube to remove, although it’s fine to remove both of them. There should be transmission fluid dripping from one of these two pipes.

Step 03

Using a funnel, open the transmission port of your vehicle and insert it. Make sure you don’t overfill the funnel with transmission fluid so that you don’t waste it or spill it everywhere.

Taking fluid from the system necessitates filling it back with transmission fluid to the needed amount, but before pouring the transmission fluid, you must first reattach the tubes you removed.

The transmission fluid can then be added when this step has been completed.

Step 04

For the following phase, you’ll need an accomplice to start the engine while you pour in the liquid. The engine will feel the fluid flow from your system, so make sure to keep adding the required fluid type to the system while the engine is running.

This will remove any polluted or defective fluids from your body. After a thorough rinse, you must replenish your body’s fluids.

After flushing the system, you can now start the engine and fill the system to the correct level. Avoid overfilling your transmission.

When you’re ready, go for a drive in your automobile and pay attention to any strange symptoms you have. Hire a professional if you’re having trouble starting your automobile and it’s becoming more difficult.


How To Make Your Transmission Last Longer?

There are no tricks to extending the life of your transmission. Neglect and a lack of maintenance are frequently to blame for transmission failure.

When we talk about maintenance, we don’t mean that you should spend your weekends working on your transmission. Just make sure your transmission fluid is fully topped off and you’re good to go. Avoid letting your transmission become flat.

Transmission fluid that is contaminated also won’t help. Replace your transmission fluid as soon as the manufacturer recommends you do so. Get things done as soon as feasible with a little effort.

Is It Bad To Shift Aggressively?

While driving, it is dangerous to shift gears too quickly since the transmission features a rotating clutch that can break early owing to wear from sudden shifts in ratios. Before making a gear change, come to a complete halt.

To come to a complete stop, you must release all pressure on the accelerator pedal. There are no automatic transmissions that can benefit from this. This operation is completely automated in an automatic transmission. Because of this, you don’t have to slam on the breaks to shift gears.


To wrap things up, we’ll talk about “stiff gear shifts.” If you’re having difficulty shifting gears, it’s likely that your car is suffering one or more of the issues listed above. Get it fixed at a nearby mechanic shop.

The transmission fluid should be checked before you go through that. That is frequently to blame. Check the transmission fluid’s quality and quantity. If you reside in a region where cold conditions are a regular occurrence, you may want to consider using a different transmission fluid.

You should always be on the lookout for potential issues and address them as soon as they arise. You could face long-term consequences if you don’t address this issue right away.

What a relief to have found the solution to the conundrum of why does my gearbox change so forcefully from first to second gear. Despite the fact that some of these difficulties may be easier to fix than you imagined, a total transmission rebuild may be necessary in order to fix them.

The cost of transmission repair might be rather high.

If you want to avoid all of this, there is a way. For the most part, transmissions can last a lifetime. Premature failure is not an option. Many of these problems can be traced back to a lack of proper maintenance.

You can count on your transmission to serve you well for many years to come if you take the time to properly repair it.