Navigating the transition from first to second gear in an automatic transmission is a critical juncture that places considerable stress on the drivetrain components.
The occurrence of a discernible jerk during this shift often serves as an early indicator of potential faults, preceding similar issues in higher gears.
Identifying a first-to-second gear jerk in an automatic transmission necessitates a systematic examination, with the foremost culprit being aged or insufficient transmission fluid.
Beyond this primary cause, potential contributors encompass malfunctioning shift solenoids, a congested transmission fluid filter, and a deteriorated clutch pack.
Addressing these issues promptly is imperative to ensure the optimal performance and longevity of the transmission system.
How Do You Know That Your Transmission Is Failing?
Recognizing the actual symptoms is crucial. Firstly, it aids in pinpointing the underlying issue. Secondly, identifying these symptoms can potentially streamline the inspection process, leading to reduced costs at the repair shop or dealership.
When your car exhibits jerking during the shift from first to second gears, it’s essential to observe various symptoms:
- Does the shaking occur solely during the transition from first to second gear, or does it also manifest during downshifting?
- To what extent does the shaking occur? Are noticeable bumps felt, making the driving experience uncomfortable?
- Are the issues consistent or intermittent, with occurrences that come and go?
- Do you hear any clunking noises or unusual sounds when your vehicle shifts between gears?
- Does similar behavior occur in other gears? For some transmissions, such issues could indicate problems with the torque converter or clutch pack (e.g., PowerShift).
- What type of transmission do you have? In a dual-clutch transmission (DCT), issues are likely related to the clutch, while conventional automatic transmissions may present different potential problems.
Answering these questions provides valuable insights before heading to the dealership or repair shop. Why emphasize these professional services? Solving transmission problems independently is a daunting task, especially for those with limited knowledge of car engineering.
What Could Cause the Car To Jerks When Shifting From 1st To 2nd Automatic?
1: Signs of a Worn Clutch Pack in Automatic Transmissions
In automatic transmissions, a crucial component called the wet clutch pack operates similarly to those found in motorcycles. This assembly consists of multiple clutch plates and discs submerged in transmission fluid. While problematic transmission fluid can lead to slipping and erratic shifts, the wear and tear of the clutch pack also play a significant role.
Detecting a worn-out clutch pack involves more than just experiencing jerky shifts; it may manifest as grinding sensations, shaking, an unusual burning smell, and even trigger the illumination of the check engine light. Additionally, the vehicle might produce various noises such as whirring and humming, exhibit transmission leaks, and face challenges staying in gear.
Given the intricacy of the clutch pack, a thorough inspection is recommended before drawing conclusions. Replacement costs for clutch packs can vary, ranging from $50 to $150, and may be higher for premium vehicles. Notably, labor constitutes the majority of the repair expenses.
The process of replacing the clutch pack entails removing and partially disassembling the entire transmission, a task that can consume up to 4 hours. Consequently, labor costs range from $300 to $600, contributing to an average total replacement cost of approximately $550. It is advisable to address these signs promptly to maintain the optimal performance of the transmission system.
2: Addressing Issues with a Faulty Shift Solenoid
Shift solenoids, simple yet crucial electromagnetic valves, play a pivotal role in directing pressurized transmission fluid to engage and disengage gears. While it’s not a frequent occurrence for shift solenoids to malfunction, it can happen, particularly in older vehicles or those with a history of transmission problems.
When shift solenoids begin to falter, symptoms may include delayed shifting, the vehicle refusing to downshift, becoming stuck in specific gears or neutral, and notably, exhibiting jerky shifts. The latter can pose a significant threat to the transmission system by placing increased stress on gears, the clutch, and the torque converter.
The replacement of a transmission solenoid or solenoid pack is both intricate and costly, underscoring the importance of consulting a reputable mechanic for an initial inspection. Should a single solenoid require replacement, repair costs typically range from $200 to $500, as reported by mytransmissionexperts.com.
Opting for the comprehensive replacement of the entire solenoid pack, particularly advisable for vehicles surpassing 150,000 miles, entails a slightly higher repair cost ranging from $250 to $700. This incremental increase is primarily attributed to labor expenses, making it a practical decision to replace all solenoids simultaneously. Proactive attention to these issues is essential for preserving the health and functionality of the transmission system.
3: Addressing Transmission Woes: Clogged Fluid Filter
Integral to automatic transmissions, a transmission fluid filter serves as a safeguard against contaminants that could compromise vital components such as shift solenoids, the torque converter, and the clutch pack. Over time, as transmission fluid ages, it accumulates increasing levels of impurities, eventually leading to the obstruction of the filter.
When the transmission fluid filter becomes clogged, fluid pressure decreases, resulting in symptoms akin to those caused by aged or insufficient transmission fluid. If a visual inspection confirms that your transmission fluid is neither burnt nor low, the next logical step is to examine the condition of the filter.
Routine replacement of the transmission fluid filter is recommended during each transmission fluid change, with the alternative being a thorough cleaning. If this maintenance has been neglected or exceeded 60,000 miles, replacing the filter becomes necessary and typically costs between $70 and $200. Some transmissions feature an external can filter, which is a quick 15-minute replacement process.
However, most vehicles employ an internal filter, necessitating a transmission pan drop for access and replacement. In such cases, the filter itself may range from $30 to $50, with labor costs varying between $100 and $150, contingent on the vehicle’s complexity. It’s worth noting that this task requires a two-post lift, making it less suitable for DIY enthusiasts. Regular attention to the transmission fluid filter contributes to sustained transmission health and functionality.
4: Inadequate Transmission Fluid Levels
Building upon our understanding of the crucial role played by transmission fluid in automatic vehicles, it’s no surprise that critically low transmission fluid levels can precipitate a host of issues akin to those caused by aged or burnt transmission fluid.
In low transmission fluid, the absence of sufficient pressure to engage and disengage shift solenoids gives rise to a myriad of problems, with jerking emerging as the most conspicuous symptom. Furthermore, the deficiency in fluid may lead to noticeable transmission slipping due to inadequate friction between clutch plates.
Warning indicators, such as the check engine light or transmission warning light, may illuminate, and in extreme scenarios, the transmission could overheat. While rectifying low transmission fluid is generally straightforward, it is essential to be cognizant of certain nuances.
The impact of transmission temperature on fluid levels is a critical consideration. Checking the transmission fluid should only be done when the engine is hot. Failing to do so may result in a misleadingly lower fluid level reading, posing the risk of overfilling.
Here’s a concise guide on checking and topping off transmission fluid
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Determine the Correct Fluid Type
Refer to your owner’s manual to ascertain the specific type of transmission fluid required for your car, considering variations in viscosity and base composition (conventional or synthetic). Incorrect fluid usage is likely to lead to complications.
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Prepare the Vehicle
Before checking the transmission fluid, embark on a 10-15 mile drive to ensure both the engine and transmission reach optimal operating temperature. Notably, idling the car may not sufficiently warm up the transmission. Park the vehicle on level ground, shift the transmission into Park, and leave the engine running.
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Check the Transmission Fluid
Utilize an old rag to locate and extract the transmission fluid dipstick in the engine bay, consulting your owner’s manual for guidance. Wipe the dipstick, reinsert it fully into the filler tube, remove it again, and assess the fluid level. The optimal level should fall two-thirds between the minimum and maximum marks on the dipstick.
5: Aging Transmission Fluid
While some manufacturers claim that transmission fluid replacement is unnecessary and even seal the transmission case, the reality is different. Although transmission fluid lasts longer than engine oil, it’s advisable to replace it every 100,000 miles, with an optimal interval around 60,000 miles.
In automatic transmissions, the role of transmission fluid extends beyond lubricating gears; it facilitates power transfer to the wheels and enables gear shifting through hydraulic solenoids. As transmission fluid ages, it loses its lubricating properties and, more crucially, fails to generate sufficient friction between clutch plates during gear shifts.
The consequence of old transmission fluid includes initial slipping of clutch plates before the fluid heats up, causing a sudden jolt or transmission jerking. Moreover, aged fluid tends to have a higher moisture and air content, resulting in a spongy consistency. This lack of rigidity impairs the proper engagement and disengagement of shift solenoids, leading to noticeable jolting and jerking, particularly in the transition from first to second gear.
Addressing Old Transmission Fluid
The recommended solution for old transmission fluid is replacement, typically costing between $150 and $200 for a professional service. Professionals perform a comprehensive job by removing the fluid pan, replacing the filter, and ensuring complete drainage from the torque converter and shift solenoids.
Alternatively, for those inclined toward DIY solutions, self-replacement involves removing the drain plug and replenishing with fresh fluid. While this may suffice for relatively newer vehicles, persistent issues should prompt a professional inspection.
6: Fluctuations in Transmission Temperature
Not every transmission is furnished with temperature sensors to signal overheating concerns. Instances of overheating may arise due to cooling system malfunctions or inherent issues within the transmission itself.
An illustration of this predicament was evident in the automatic transmission accompanying the 1.8L and 1.4L Turbo engines in the Chevy Cruze, which frequently suffered from overheating. Elevated temperatures, particularly during the critical shift from 1st to 2nd gear, triggered noticeable shaking.
Addressing this issue may involve installing a transmission fluid cooler or attempting a fluid change to assess improvement. Additionally, it’s worth noting that poor driving habits, such as towing excessively heavy trailers or consistently driving at high revs, can contribute to transmission overheating.
7: Dual-Clutch Transmission Clutch Issues
Dual-clutch transmissions such as DSG, PowerShift, or PDK are susceptible to reliability concerns, primarily attributed to two faulty components: the control module (TCM or TCU) and the clutch pack. Despite their design with two clutches for rapid shifting, the seamless cooperation between these clutches is not always guaranteed.
Additionally, the clutches in dual-clutch transmissions naturally experience more wear and tear than those in manual transmissions due to engagement in challenging conditions.
This issue is particularly pronounced in dry-clutch transmissions like PowerShift or older DSG7 units. However, wet-clutch models may also encounter problems.
If you own a vehicle with a dual-clutch transmission, it is advisable to have the clutch system inspected. Alternatively, issues may arise from the transmission control unit, warranting a thorough examination.
8: Issues with the Valve Body
In a traditional automatic transmission, a crucial component is the valve body—a substantial block with numerous passages for transmission fluid and valves that open and close to engage specific gears. If any part of the valve body is obstructed, the intended gear may fail to engage, leading to potential jerking or shaking. This can occur if a specific valve fails to open promptly, causing a delay in gear engagement.
While the valve body can be cleaned, there are instances where certain actuators or valves may necessitate replacement. This task typically falls under the expertise of a professional mechanic.
Frequently, valve bodies require service due to poor transmission fluid quality. This underscores the importance of regular fluid changes, utilizing only high-quality products to maintain the optimal performance of the valve body.
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How Do You Fix These Issues?
To address jerking during the shift from 1st to 2nd gear, it’s crucial to initiate a comprehensive transmission service.
Begin by understanding your car’s protocol for checking transmission fluid. Most vehicles require transmission issues to be examined by brand specialists.
However, for those allowing manual fluid checks with a dipstick, it’s essential to consult the driver’s manual for the precise procedure, as variations exist among different transmission types.
Here are detailed steps to tackle jerking between the first and second gears:
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Adding Transmission Fluid
- Identify the type of transmission fluid required for your vehicle.
- With the dipstick removed, locate the filler tube.
- Add the appropriate fluid while continually checking the levels to address low transmission fluid.
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Changing Transmission Fluid
- Recognize that a complete fluid change is challenging due to residual fluid in automatic transmissions.
- Even a partial change can be beneficial in resolving the issue.
- When opting for a fluid change, ensure you purchase the manufacturer-recommended product.
- Professional assistance is advised due to the intricacies involved in the process.
After the fluid change, drive 10-20 miles before assessing whether the jerking issue has been resolved. If the problem persists, it may indicate the need for a complete transmission overhaul. In some cases, opting for transmission replacement might be a more viable solution.
Is it necessary to inspect and repair the transmission?
Is transmission replacement or repair necessary, and does the type and model of your vehicle’s transmission play a crucial role in this decision? For dual-clutch or CVT units, which typically don’t exhibit jerking during shifting, a complete transmission replacement may be required.
In the case of conventional automatic transmissions, repair is a viable option, albeit a costly one due to the labor-intensive nature of the work and the extended duration it takes. Keep in mind that your vehicle will be immobile during this repair period at the shop.
The cost of transmission repair can range from $1000 for minor issues to as high as $5,000 for more severe problems and multiple breakdowns. Before committing to the repair, it’s advisable to ask the mechanic for an estimated price to make an informed decision.
Can You Drive with Car Jerking When Shifting From 1st To 2nd Automatic?
Driving a car that jerks during the shift from 1st to 2nd gear in an automatic transmission is not recommended. The jerking may indicate underlying issues with the transmission, and continued driving in this condition could potentially lead to further damage. It’s advisable to have the transmission inspected and repaired by a qualified mechanic before resuming regular driving.
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How do we prevent Automatic Transmission from Jerking?
Preventing jerking in an automatic transmission involves proactive maintenance and adopting good driving habits. Here are some key practices to help avoid jerking issues:
Regular Transmission Service
- Follow the manufacturer’s recommended schedule for transmission fluid changes and servicing.
- Use high-quality transmission fluid that meets the specifications outlined in your vehicle’s manual.
Smooth Acceleration and Deceleration
- Avoid abrupt acceleration or sudden deceleration, as these can put unnecessary stress on the transmission.
Complete Stops before Shifting
- Come to a complete stop before shifting from Drive to Reverse or vice versa. Abrupt shifts without a full stop can contribute to jerking.
Routine Inspection
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- Keep an eye out for any signs of transmission issues, such as unusual noises or delayed shifting, and address them promptly.
Proper Fluid Levels
- Check and maintain the proper transmission fluid levels. Low fluid levels can lead to jerking and other performance issues.
Avoid Overloading
- Do not exceed the vehicle’s recommended towing capacity, as overloading can strain the transmission and lead to jerking.
Gentle Driving in Extreme Conditions
- Exercise caution when driving in extreme conditions, such as heavy traffic or harsh weather, and adopt smooth driving practices to reduce stress on the transmission.
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FAQs – Car Jerks When Shifting From 1st To 2nd Automatic
How often should transmission fluid be changed?
Follow the manufacturer’s recommendations, typically every 30,000 to 60,000 miles, but check your vehicle’s manual for specific intervals.
Can I fix the jerk myself, or do I need professional help?
While some issues like low fluid levels can be addressed by adding transmission fluid, diagnosing and fixing underlying problems often requires professional expertise.
Can a software update solve the problem?
In some cases, a software update, particularly for modern electronic transmissions, can address certain issues and improve performance.
Can driving habits contribute to the jerk?
Yes, abrupt acceleration, harsh braking, or inconsistent driving practices can contribute to jerking issues.
Is hard shifting bad for a transmission?
Yes, hard shifting can cause increased wear and tear on the transmission components over time.
Can low oil cause hard shifting?
Low transmission fluid levels can lead to hard shifting, and maintaining proper fluid levels is essential for smooth operation.
Will a transmission flush fix hard shifting?
A transmission flush can help improve shifting performance if the issue is related to dirty or degraded fluid, but it may not fix mechanical problems.
What happens if gear oil is not changed?
Failure to change gear oil can lead to increased friction, heat, and wear, potentially resulting in transmission issues and jerking.
How do you go from 1st to 2nd gear smoothly?
Ensure a complete stop before shifting, accelerate smoothly, and maintain proper transmission fluid levels to promote smooth gear transitions.
What causes automatic transmission to jerk when shifting?
Common causes include low fluid levels, worn-out clutches, faulty solenoids, or issues with the valve body.
What causes a transmission to shift hard from 1st to 2nd?
Causes may include low fluid, worn clutches, or problems with the valve body, necessitating a thorough inspection.
How do you fix a hard shifting automatic transmission?
Professional diagnosis is recommended, addressing issues such as fluid changes, clutch replacements, or other necessary repairs.
How do I stop jerking when changing gears?
Regular transmission maintenance, adopting smooth driving habits, and addressing issues promptly can help reduce or eliminate jerking during gear shifts.
Conclusion
Ultimately, when addressing the issue at hand, your primary emphasis should be on the transmission fluid.
Begin by verifying the transmission fluid level and assessing the condition and color of the fluid.
If these aspects are satisfactory, proceed to inspect the transmission fluid filter.
In cases where these measures prove inconclusive, the likelihood is that you are contending with a worn-out clutch pack or malfunctioning shift solenoids.
Both of these issues require the expertise of a professional or someone with experience to thoroughly inspect, diagnose, and resolve.
