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By NAPA
When it comes to working in the shop, personal safety should always be the top priority. Safety glasses, gloves, hearing protection, even work boots are all meant to keep your body protected. It should come as no surprise that with new hybrid and electric drivetrains, there are also new safety gear requirements. Insulated tools are just the start of a well-stocked shop. There’s more to electrical safety than just owning a set of
link hidden, please login to view. This expert advice is meant to give an overview of the kinds of general
link hidden, please login to view (PPE) needed to service hybrid and electric vehicles. It is important to follow proper repair procedures for these vehicles, as described in the vehicle specific repair manual. This includes using all required PPE listed in the repair procedure with no exceptions. If you do not have ALL of the necessary PPE, DO NOT proceed with a repair, as doing so could lead to severe injury or even death. Now that you have an idea of the serious nature of vehicle high-voltage electrical systems, let’s take a look at how you can protect yourself. Personal Protection
Wearing the right personal protection gear is a must when working with electric and hybrid vehicle high-voltage systems. The electrical energy stored in a typical main traction battery pack is more than enough to kill or seriously injure a person.
In the past, wearing gloves while working on a car was usually a personal preference. Today, when working on high-voltage electrical systems, wearing gloves is mandatory. And not just one pair of gloves, but two pairs (inner and outer) are to be worn together. Just in case you are wondering, welding gloves are NOT the same as high-voltage
link hidden, please login to view. Class 0 gloves are required for protection up to 1,000 volts AC and 1,500 volts DC. One pair of rubber gloves (inner) protects against electric shock, while the leather gloves (outer) protect the rubber gloves from mechanical wear. They must be worn together in order to perform correctly. Electrical gloves
link hidden, please login to view every six months to ensure they are still capable of insulating the user from the rated voltage. Gloves will be labeled with the test date near the cuff. The exact personal protection gear needed for a repair will be spelled out in the vehicle service repair manual procedures. This may include an insulated apron,
link hidden, please login to view, insulated arm sleeves, link hidden, please login to view, arc flash face shield with neck protection, and insulated mats or blankets. These layers of protection are necessary not just for avoiding shocks, but also potential explosions like an arc flash. Tool Safety
It may seem odd to consider hand tools as part of personal protection equipment, but that is exactly the case when working with electricity. Most ordinary hand tools are made from metal, which does an excellent job conducting electricity. For servicing high-voltage electrical systems tools need to be designed in such a way that they don’t provide a path for electricity to travel to the technician, or to other vehicle components. That’s why EV tools are specially designed to protect the technician when used properly.
An EV tool set is a must-have for any technician looking to service an electric vehicle. A good start for insulated hand tools is an insulated screwdriver set, an
link hidden, please login to view and an link hidden, please login to view. Electric vehicle tools used for diagnostics need to handle higher voltages, like this link hidden, please login to view. For repairs where the battery pack must be removed, special care must be taken due the extreme weight involved. A link hidden, please login to view is the proper way to lower and transport a hybrid or electric vehicle battery pack. You wouldn’t pull an engine out of a car without the proper lifting equipment, so give the same respect to a heavy traction battery pack. Work Space Safety
Normally, when a car is being worked on in a service bay, there is little danger to fellow technicians. But that isn’t the case with a modern electric or hybrid vehicle. Whenever the high-voltage electrical system on one of these vehicles is exposed, proper notification must be given to those working in the area. Place
link hidden, please login to view and link hidden, please login to view around the vehicle whenever the high voltage electrical system is being serviced. This warns other technicians that there is an electrical shock hazard in the shop, and to keep their distance. You may also place an electrical warning sign on the vehicle to signal to everyone in the shop to stay away. Part of your workspace safety gear must be an
link hidden, please login to view. If a technician suffers an electrical accident while working on a vehicle, anyone attempting to help them is also in danger of electric shock. An insulated safety hook must be used to separate the victim from the electrical source. The last tip for work space safety is to never work on an electric or hybrid vehicle alone. Always let another technician or coworker know you are working on a high-voltage electrical system, and to check in on you periodically. Training Is The Key To Safety
Working on hybrid and electric vehicle high voltage systems requires meticulous procedures and extensive training. While there are plenty of dangers when working on internal combustion vehicles, many of the safety procedures surrounding those vehicles have been known for decades. As EV and hybrid drivetrain become more mainstream, so will their service safety procedures.
Tackling hybrid and electric vehicle high-voltage system repairs isn’t impossible, but there must be dedication to proper training. If you are a technician (or are wanting to become a technician), and are looking for electric vehicle service training,
link hidden, please login to view can help. NAPA Auto Tech offers a wide variety of convenient, cost-effective ways to become an automotive professional. In addition to eLearning and instructor-led training, NAPA Auto Tech offers hands-on and seminar-style classes for almost every make and model to help technicians keep their skills up to date. Photos courtesy of Brian Medford.
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By NAPA
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
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By RobertScott56
If you're in need of an auto parts repair shop in Houston, there are numerous options available to you. One highly recommended establishment is Carmotive, a well-known chain with multiple locations across the city. They offer a wide range of auto parts and accessories, along with knowledgeable staff who can assist you in finding the right parts for your vehicle. Another reputable choice is O'Reilly Auto Parts, which also has several branches throughout Houston. Their stores carry a comprehensive selection of parts and tools, and their staff is known for their helpfulness and expertise. Additionally, Advance Auto Parts is another reliable option, known for its extensive inventory and convenient locations. No matter which shop you choose, be sure to call ahead to confirm availability and any specific services they offer, ensuring a smooth and efficient repair process for your vehicle.
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By Counterman
Applications are being accepted for the Federated Car Care Scholarship program.
Interested students should complete and submit their applications at
link hidden, please login to view by March 31. The Federated Car Care scholarships are funded by Fisher Auto Parts in memory of Art Fisher, founder of Federated Auto Parts and the Federated Car Care program. Qualified candidates should specify “Federated” on their application when applying online.
Administered by the University of the Aftermarket Foundation (
link hidden, please login to view), the scholarships will be awarded to employees and children of active Federated Car Care Center members attending a two- or four-year accredited college, an ASE/NATEF-certified post-secondary automotive, heavy-duty or collision technician training program or any licensed and accredited vocational school. Students graduating from high school in 2024 and heading to any of these post-secondary programs also are eligible. “It is a privilege for us to once again provide scholarship opportunities to the children and employees of Car Care members, assisting them in furthering their education,” said Bo Fisher, chairman and CEO of Fisher Auto Parts. “The University of the Aftermarket Foundation’s AutomotiveScholarships.com website streamlines the application process. We urge all interested candidates to submit their applications by March 31 and look forward to awarding Federated Car Care scholarships to another group of deserving young men and women for the 2024-25 academic year.”
Federated is one of more than 30 other organizations awarding scholarships on
link hidden, please login to view. As an added benefit for students who apply at this site, each completed application will be considered by every scholarship where the candidate meets the qualifications. The post
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By AutoZone
MEMPHIS, Tenn. , Feb. 27, 2024 (GLOBE NEWSWIRE) -- AutoZone, Inc. (NYSE: AZO) today reported net sales of $3.9 billion for its second quarter (12 weeks) ended February 10, 2024 , an increase of 4.6% from the second quarter of fiscal 2023 (12 weeks). Same store sales, or sales for our domestic and
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