Jump to content

  • Welcome to Auto Parts Forum

    Whether you are a veteran automotive parts guru or just someone looking for some quick auto parts advice, register today and start a new topic in our forum. Registration is free and you can even sign up with social network platforms such as Facebook, X, and LinkedIn. 

     

Why Is My Automatic Car Not Shifting Gears?


Recommended Posts

Is your car not shifting gears like it used to? An automatic transmission makes driving much less complicated than the manual gear (stick shift) alternative. But that convenience comes at the price of complexity. When an automatic transmission equipped car won’t shift gears, there could be several potential issues. These issues can range from a simple fix to needing a complete transmission rebuild. Below is technical expertise on “Why is my automatic car not shifting gears?” 

Low Transmission Fluid
link hidden, please login to view

Your automatic transmission relies on hydraulic fluid pressure to operate. The pump pulls

link hidden, please login to view
from the transmission pan reservoir to actuate different components. If the transmission fluid level gets low enough, the pump will be unable to push fluid where it needs to go. Even worse, the pump will pull air into the system, which could lead to a lack of lubrication that damages parts

If you are lucky, your vehicle has a transmission fluid dipstick so you can easily check the fluid level according to the instructions in the owner’s manual. If your vehicle does not have a transmission fluid dipstick but is “

link hidden, please login to view
”, that doesn’t prevent you from checking the fluid level. In most cases, the fluid can be checked via a fill plug, but the transmission has to be at a certain temperature and the vehicle must be level. This isn’t an easy task, so it might be best to have your local
link hidden, please login to view
do it for you.

Faulty Shift Solenoid

We just mentioned how an automatic transmission relies on pressurized fluid to operate, but that fluid also needs to be routed to where it is needed. In a modern, electronically controlled automatic transmission, shift solenoids control the flow of transmission fluid. If the shift solenoid is faulty, then the fluid won’t be routed to the desired shift actuator. In older non-electronically controlled transmissions, shifting was controlled by shift valves, but the idea is the same. Shift solenoids can wear out or get stuck, leading to a no-shift condition. Fixing a faulty shift solenoid usually requires removing the transmission fluid pan to access the transmission valve body.

Low Transmission Fluid Pressure

You should be seeing a pattern of how important hydraulic fluid is to the operation of an automatic transmission. If the transmission fluid level is fine, there may still be a problem with the fluid pressure. Low fluid pressure can be caused by a worn out pump, clogged fluid passages or a clogged transmission fluid filter. A lack of shifting car gears due to low fluid pressure usually means it is time for a

link hidden, please login to view
. If the problem is with the pump itself, then you are probably looking at a transmission rebuild.

Bad Transmission Control Module

Most modern automatic transmissions have an electronic

link hidden, please login to view
(TCM). The control module takes input from various sensors, and decides how the transmission should react. Depending on where the control module is mounted, it can lead a very hard life. Extreme temperatures, vibrations, leaking fluids and sometimes even how the circuit board is built can all lead to failures of microchips and other electronic components. If the check engine light is on while you are having shifting problems, the TCM may be the issue.

Broken Shift Cable

Each time you drive, the shifter is moved at least twice, once for driving and again for park. That movement adds up over the years. While an automatic transmission doesn’t have the complicated shifting mechanism of a manual transmission, there is usually a physical connection between the shifter and the transmission. Modern

link hidden, please login to view
usually have plastic components that can break down over time. There may also be bushings that get worn out. The shift cable itself is usually metal and rarely breaks, but the pieces connecting it to the transmission can possibly fail.

Shift Lock Engaged

If the car is not shifting into gear from park, then the issue might be the gear shift interlock. Most modern vehicles have a lockout on the automatic gear shifter that requires the brake pedal to be pressed first. If the brake pedal isn’t pressed, the shifter won’t move. It is possible that the brake pedal sensor doesn’t read that the pedal is pressed, or a break in the shift interlock circuit interrupts the connection. The shift lock can be

link hidden, please login to view
.

Worn Out Bands

Just like how brake pads can wear out, so can the friction materials inside the transmission like the bands. Transmission bands hold certain components in place, while others are allowed to rotate. When this happens, the transmission won’t go into certain gears. Unfortunately worn out bands usually mean a complete transmission overhaul. Material from the worn out bands can make their way into sensitive fluid passages, clogging them or causing accelerated wear

Failed Throttle Sensor

This one may seem odd, but gauging how much throttle input the driver is giving makes a big difference in how the transmission acts. Whether the input is from a

link hidden, please login to view
or a cable, if the driver pushes down the gas pedal, the transmission needs to change gears. But if that input isn’t received, the transmission has no idea what the driver wants to do. If the transmission doesn’t know the driver is hitting the gas, it might not shift into the next gear. Even worse, on some older transmissions, if the transmission isn’t linked correctly to the throttle input, severe damage can be done.

If your transmission isn’t shifting like it used to, simply head to your local

link hidden, please login to view
center. Our team of ASE-certified technicians have the expertise and training to diagnose your automatic transmission issues. As a bonus, your repair is covered by our free 24-Month/24,000-Mile
link hidden, please login to view
(parts and labor on qualifying repairs and services), which spans across the entire nationwide NAPA Network, including 17,000+ NAPA Auto Care center locations.

Photos courtesy of

link hidden, please login to view
.

The post

link hidden, please login to view
appeared first on
link hidden, please login to view
.

link hidden, please login to view

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Similar Topics

    • By GreenGears Auto Limited
      In the world of automotive repairs and maintenance, a critical decision car owners face is whether to opt for new or used parts. While new parts offer the allure of pristine condition, used parts present a compelling alternative, especially when it comes to a reliable brand like Toyota. This comprehensive guide delves into the numerous benefits of choosing used Toyota parts, focusing specifically on subframes, transfer cases, and ABS pumps. Furthermore, it highlights GreenGears Auto Limited (
      link hidden, please login to view) as the premier destination for sourcing high-quality used Toyota parts. The Economic Advantage: Cost Savings
      The most compelling reason to consider used Toyota parts is their significant cost advantage compared to their brand-new counterparts. New parts, especially for complex components like subframes, transfer cases, and ABS pumps, can be exorbitantly expensive. For budget-conscious car owners or those with older vehicles, the cost of new parts can often be prohibitive.
      Used parts, on the other hand, offer substantial savings without compromising on quality or performance. At GreenGears Auto Limited, you'll find a wide selection of used Toyota parts meticulously inspected and priced competitively. This allows you to significantly reduce repair costs and keep your Toyota running smoothly without breaking the bank.
      Table 1: Cost Comparison of New vs. Used Toyota Parts
      Part New Price (USD) Used Price (USD) Savings Subframe 1500-2500 200-1000 50-75% Transfer Case 2000-3500 400-1500 40-60% ABS Pump 800-1200 100-500 40-60% Note: Prices may vary depending on the specific model and year of your Toyota vehicle.
      As the table illustrates, the cost savings from choosing used parts can be substantial, ranging from 40% to 75%. This makes used parts an attractive option for those looking to save money on repairs and maintenance.
      Environmental Responsibility: Reducing Waste and Carbon Footprint
      In an era of growing environmental awareness, choosing used parts is a responsible choice. The production of new automotive components requires significant energy and resources, contributing to pollution and greenhouse gas emissions. Opting for used parts helps to reduce the demand for new manufacturing and promotes a more sustainable approach to car repairs.
      By choosing GreenGears Auto Limited, you actively participate in the circular economy, extending the lifespan of valuable resources and minimizing waste. Reusing and repurposing existing parts help to conserve raw materials, reduce energy consumption, and decrease the carbon footprint associated with the automotive industry.
      OEM Quality and Reliability: The Toyota Legacy
      Toyota has earned a reputation for producing durable and long-lasting vehicles. This longevity is a testament to the quality and reliability of their parts, even when used. Unlike aftermarket alternatives, which may compromise on quality to offer lower prices, used Toyota parts retain their original equipment manufacturer (OEM) standards.
      GreenGears Auto Limited understands the importance of quality and reliability. All their used Toyota parts undergo rigorous testing and inspection to ensure they meet the highest standards. This commitment to quality gives you peace of mind knowing that your vehicle is equipped with genuine Toyota components that are built to last.
      Wide Selection and Availability: Catering to All Toyota Models
      Whether you own a popular Corolla, a rugged Tacoma, or a classic Land Cruiser, GreenGears Auto Limited boasts an extensive inventory of used Toyota parts to cater to various models and years. Their online catalog makes it easy to search for the specific part you need, and their knowledgeable staff is always ready to assist you in finding the right fit for your vehicle.
      Even for rare or discontinued models, GreenGears Auto Limited can often source hard-to-find parts, ensuring that you can keep your Toyota running smoothly, regardless of its age or model.
      Supporting Local Businesses: Community and Sustainability
      Choosing GreenGears Auto Limited means supporting a local business that is dedicated to providing exceptional service and contributing to the community. By sourcing used parts from them, you contribute to the local economy and foster sustainable practices within the automotive industry.
      GreenGears Auto Limited takes pride in its commitment to customer satisfaction and environmental responsibility. Their passion for providing quality used parts at affordable prices makes them a trusted partner for all your Toyota repair and maintenance needs.
      The Specific Benefits of Used Subframes, Transfer Cases, and ABS Pumps
      Now let's delve deeper into the specific advantages of choosing used subframes, transfer cases, and ABS pumps from GreenGears Auto Limited.
      Subframes
      Cost Savings: New subframes can be incredibly expensive, often costing thousands of dollars. Used subframes from GreenGears Auto Limited offer significant savings, allowing you to repair your vehicle's structural integrity without breaking the bank. OEM Quality: Toyota subframes are designed and manufactured to exacting standards, ensuring durability and longevity. Even used subframes retain their structural integrity and can provide years of reliable service. Availability: GreenGears Auto Limited maintains a wide selection of used subframes for various Toyota models, making it easy to find the right fit for your vehicle. Environmental Impact: Choosing a used subframe helps to reduce the demand for new manufacturing and the associated environmental impact. Transfer Cases
      Cost-Effectiveness: New transfer cases can be a major expense, especially for four-wheel-drive or all-wheel-drive vehicles. Used transfer cases from GreenGears Auto Limited offer a cost-effective alternative, allowing you to restore your vehicle's off-road capabilities without a hefty price tag. Reliability: Toyota transfer cases are known for their robustness and reliability. Even used transfer cases, when properly inspected and tested, can provide years of dependable service. Performance: A used transfer case from GreenGears Auto Limited can restore your vehicle's original performance, ensuring smooth power distribution to all wheels. Reduced Environmental Impact: Choosing a used transfer case helps to conserve resources and reduce waste. ABS Pumps
      Affordability: New ABS pumps can be costly, but used ABS pumps from GreenGears Auto Limited offer a budget-friendly solution to restore your vehicle's braking system. Safety: A functioning ABS pump is crucial for safe braking, especially in emergency situations. Used ABS pumps from GreenGears Auto Limited are thoroughly tested to ensure they meet safety standards. Availability: GreenGears Auto Limited offers a wide selection of used ABS pumps for various Toyota models, ensuring you can find the right part for your vehicle. Eco-Friendliness: Choosing a used ABS pump helps to reduce the environmental impact associated with manufacturing new parts. GreenGears Auto Limited: Your One-Stop Shop for Used Toyota Parts
      GreenGears Auto Limited (
      link hidden, please login to view) is your trusted source for high-quality used Toyota parts. Our commitment to quality, affordability, and sustainability sets them apart. Extensive Inventory: GreenGears Auto Limited boasts a vast inventory of used Toyota parts, including subframes, transfer cases, ABS pumps, and much more. Our online catalog makes it easy to find the specific part you need. Rigorous Testing: All used parts undergo thorough inspection and testing to ensure their functionality and reliability. Expert Knowledge: The knowledgeable staff at GreenGears Auto Limited can assist you in finding the right part for your Toyota model and year. Fast Shipping: GreenGears Auto Limited offers free, fast and reliable shipping, ensuring you get your parts quickly. Customer Satisfaction: We prioritize customer satisfaction and offer excellent customer service. Conclusion
      Choosing used Toyota parts from GreenGears Auto Limited offers a multitude of benefits. You can save money, reduce your environmental impact, and ensure your vehicle's reliability and performance. Whether you need a subframe, transfer case, ABS pump, or any other Toyota part, GreenGears Auto Limited is your go-to source.
      Visit our website at
      link hidden, please login to view today to explore our extensive inventory and experience the advantages of choosing used Toyota parts. Remember: By opting for used parts, you're not only making a smart financial decision but also contributing to a more sustainable future for our planet.
    • By GreenGears Auto Limited
      The U.S. auto market, a bellwether of the economy, is undergoing significant shifts, driven by several emerging auto trends. From the ongoing chip shortage to the rising popularity of electric vehicles (EVs), and the dominance of SUVs and trucks, these trends are shaping the future of the automotive industry and influencing consumer choices. This article takes a deep dive into these developments, highlighting key facts, figures, and market dynamics.
      Chip Shortage and Inventory Woes
      One of the most significant auto trends in recent years has been the global semiconductor chip shortage, which has severely disrupted the automotive supply chain. This shortage has led to reduced production and limited inventory at dealerships, pushing up prices for both new and used cars.
      According to Cox Automotive, new-vehicle inventory in the U.S. was at just 1.7 million units in early 2023, significantly lower than pre-pandemic levels. As of August 2024, total inventory stood at 2.91 million units, translating to roughly 68 days of supply. While this represents an improvement, the situation remains challenging, affecting consumers' ability to find and purchase vehicles at affordable prices.
      Rise of Electric Vehicles (EVs)
      The growing adoption of electric vehicles is another major auto trend transforming the U.S. market. With increasing concerns about climate change and advancements in EV technology, consumers are more frequently considering electric options.
      In 2023, EV sales in the U.S. surged by 65%, reaching nearly 800,000 units. The momentum behind this trend is expected to accelerate, with projections suggesting that EVs could account for over 50% of new car sales in the U.S. by 2030. Automakers like Tesla, Ford, and General Motors are ramping up EV production to meet the anticipated demand. Additionally, the federal government has set ambitious targets to reduce carbon emissions, offering financial incentives to further boost EV sales.
      Shift Towards SUVs and Trucks
      The preference for larger vehicles like SUVs and trucks continues to dominate the U.S. auto market, with light trucks and SUVs accounting for around 80% of all vehicles sold in recent years. In August 2024, sales of light trucks were up 8.9% year-over-year, reaching 1,115,544 units. This trend is driven by consumer demand for vehicles that offer practicality, versatility, perceived safety, and improved fuel efficiency.
      E-Commerce and Digital Retailing
      The way consumers buy cars is also evolving. The pandemic accelerated the shift towards e-commerce and digital retailing, as online car-buying platforms and virtual showrooms offered a convenient and safe alternative to traditional dealerships. While the majority of car purchases still happen in person, online sales are steadily growing, and industry experts predict that digital retailing will play an increasingly important role in future auto sales.
      Subscription Services
      Car subscription services represent another emerging trend disrupting the traditional vehicle ownership model. These services offer consumers the flexibility to access a variety of vehicles for a monthly fee, without the long-term commitment of ownership or leasing. Although still in its early stages, this model has the potential to reshape the way people think about accessing and using cars in the future.
      Technological and Regulatory Trends
      Beyond market trends, technological advancements and regulatory shifts are influencing the auto industry. Autonomous driving, connected vehicles, and advancements in battery technology are reshaping consumer expectations. Additionally, the federal government’s push for 50% EV sales by 2030 and stricter emissions regulations are accelerating the industry's pivot toward electric mobility.
      Key Facts and Figures
      Category Fact/Figure Year New Vehicle Inventory 1.7 million units Early 2023   2.91 million units (68 days of supply) August 2024 EV Sales Growth 65% increase 2023 Total EV Sales Nearly 800,000 units 2023 Projected EV Market Share Over 50% of new car sales By 2030 SUVs/Trucks Sales Share 80% of total vehicle sales Recent years Light Truck Sales Growth 8.9% year-over-year growth, 1,115,544 units sold August 2024 Average New Car Monthly Payment $700 Late 2022 Used Car Sales 40.6 million units 2021 Projected Autonomous Vehicle Market Over $60 billion By 2030 Public EV Charging Stations 46,000 stations 2021 Average EV Range 234 miles per charge 2022 Subscription Service Growth Emerging, disrupting traditional ownership Ongoing The Road Ahead: Navigating a Shifting Landscape
      The U.S. auto market is in a state of flux, with several auto trends shaping its future. The semiconductor chip shortage continues to impact production, inventory, and prices, while the rise of electric vehicles and the preference for SUVs and trucks are influencing consumer purchasing behavior. Meanwhile, the growing popularity of e-commerce, digital retailing, and subscription services is transforming how cars are bought and accessed.
      As these auto trends continue to evolve, the automotive industry must innovate and adapt to meet shifting consumer expectations. From automakers to dealerships and used car businesses like GreenGears Auto Limited, staying ahead of these trends will be crucial for thriving in the years to come. The road ahead will be defined by technological advancements, regulatory pressures, and changing consumer preferences, offering both challenges and opportunities for the U.S. auto industry.
       
      www.GreenGearsAuto.com
    • By CALEPH Auto Parts
      The car air filter is an important part of the engine intake system. Its main function is to filter out dust and impurities in the air entering the engine to protect the normal operation of the engine. Regular inspection and replacement of air filters is essential to maintain vehicle performance and fuel efficiency.
      When to replace the car air filter?
      Generally speaking, the recommended replacement cycle of the air filter is 10,000 to 20,000 kilometers, but this cycle varies according to the vehicle's use environment and driving conditions. If you often drive in dusty or poor air quality environments, you may need to replace it more frequently. For example, in areas with heavy sand and dust, it may need to be cleaned every 5,000 to 7,500 kilometers, while in severely polluted environments, it may need to be checked every 3,000 kilometers. If the air filter is blocked, the indicator light alarm should also be replaced immediately.
      How to check the air filter?
      1. Open the engine hood and find the location of the air filter.
      2. Check whether there is dust accumulation on the outside of the air filter.
      3. Gently tap or use compressed air to blow the filter element from the inside to the outside to remove dust.
      4. If the filter element is black or damaged, or if there is too much dust after beating, it is recommended to replace it.
      Steps to replace the air filter:
      1. Determine the location of the air filter and open the engine hood.
      2. Remove the screws or buckles that fix the air filter box.
      3. Take out the old air filter and clean the dust in the filter box.
      4. Install the new air filter and ensure that it is well sealed.
      5. Reinstall the air filter box and close the engine hood.
      Note:
      During the replacement process, make sure to use a genuine air filter that matches the vehicle model.
      Be careful not to damage the filter element when replacing it, and avoid contamination of the filter element by oil or other impurities.
      Check whether the seal of the air filter box is intact. If it is damaged, it should be replaced in time.
      Please check and replace the air filter regularly according to your vehicle usage and environmental conditions, combined with the recommendations of the vehicle manufacturer, to ensure the best performance of the engine and extend its service life. If you are not sure how to do it, it is recommended to consult a professional auto repair technician.
      🔗For more automotive knowledge, please visit:
      link hidden, please login to view 💬Leave a message to tell us your needs, our professional team is always at your service!
    • By Dorman Products
      How to remove and replace a cigarette lighter socket in your car or truck
    • Brake & Suspension Clearance Event
    • By roybrakepad
      Brake pads are a vital component of any vehicle’s braking system. They play a key role in the safety and reliability of a vehicle, making it essential that they meet the highest standards of quality. A subpar brake pad can lead to increased wear and tear, reduced braking efficiency, and even safety hazards. Therefore, the supplier you choose must not only provide high-quality products but also demonstrate a commitment to excellence in every aspect of their operations.
      The Impact of a Reliable Supplier on Your Business
      A reliable brake pad supplier can positively impact your business in several ways:
      Product Quality: Consistently high-quality brake pads reduce returns, customer complaints, and potential liability issues. Operational Efficiency:A dependable supplier ensures timely deliveries, helping you maintain production schedules and meet customer demands. Cost Management: Quality suppliers offer competitive pricing and help minimize costs, even the low MOQ, related to defects, warranties, and downtime. Customer Satisfaction: Reliable products lead to higher customer satisfaction and repeat business, enhancing your brand reputation. Compliance and Safety: Suppliers who adhere to industry standards ensure that your products meet legal and safety requirements, avoiding costly fines and recalls. Given these factors, it’s clear that selecting a brake pad supplier is not just a purchasing decision—it’s a strategic partnership that can influence the success of your business.
      Reliable brake pad Supplier:  link hidden, please login to view

×
  • Create New...