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The thermostat is a crucial component in your car's engine system, playing a vital role in regulating the engine temperature. Contrary to common beliefs, removing your car's thermostat can lead to severe consequences, affecting fuel efficiency and engine lifespan. In this article, we will explore the benefits of retaining the thermostat and explain why removing it should be avoided. link hidden, please login to view
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The replacement of link hidden, please login to viewis an important part of car maintenance, as the condition of the brake pads directly affects braking performance and safety during travel. When it is necessary to replace worn brake pads, it is generally recommended to replace the brake pads on both the front and rear wheels together.
Actually, in most cases, it is not necessary to replace the brake pads on both the front and rear wheels together. The wear and link hidden, please login to view of the front and rear brake pads are usually different. Under normal circumstances, the front brake pads experience greater braking force, resulting in higher wear and shorter lifespan. They typically need to be replaced around 30,000 to 50,000 kilometers. On the other hand, the rear brake pads endure relatively less braking force, meaning they last longer. Generally, they need to be replaced around 60,000 to 100,000 kilometers. When replacing brake pads, it is important to replace them together so that the braking force on both sides is balanced.
If both the link hidden, please login to view and link hidden, please login to viewhave a certain degree of wear, it is also possible to replace all four of them together.
When should brake pads be replaced, and how can you perform a self-check on them? Here are the methods:
Check the thickness: A new brake pad typically has a thickness of around 1.5 cm. As they wear over time, the thickness of the brake pad gradually decreases. Professionals recommend that when visually observing that the brake pad thickness is only about 1/3 (approximately 0.5 cm) of its original thickness, it is advisable to increase the frequency of self-checks and be prepared for replacement. Each brake pad has a raised indicator on both sides, with a thickness of around 2-3 mm. This indicator represents the minimum thickness for brake disc replacement. If the brake pad thickness is level with this indicator, it must be replaced.
It is indeed important to consider individual driving habits and environmental factors when determining the replacement interval for brake pads. While a general guideline is around 60,000 kilometers, it is advisable to have them inspected by a professional technician during regular vehicle maintenance when visually observing that the brake pads are thinning. This is because visual inspection can sometimes lead to errors, and a thorough examination by a qualified mechanic is more accurate and precise.
Listen for noises: If you hear a "squealing" sound when lightly applying the brakes, it could be an indication of the initial interaction between the brake pads and the brake rotor upon installation. In such cases, it is recommended to replace the brake pads immediately because they have already reached the limit where the indicator on both sides of the brake pad is directly rubbing against the brake rotor. When encountering this situation, it is important to inspect the brake rotor while replacing the brake pads. The occurrence of this sound often suggests that the brake rotor has been damaged. Even after replacing the brake pads, the noise may persist. In severe cases, it may be necessary to replace the brake rotor. Additionally, the quality of the brake pads can also contribute to the occurrence of such noises.
Therefore, once unusual noises occur during braking, if it is not caused by the brake pads, it is possible that excessive wear of the brake pads has led to direct contact between the brake pad indicator and the brake rotor, resulting in damage to the brake rotor. The cost of replacing a brake rotor is higher than that of brake pads. Therefore, it is advisable for vehicle owners to develop a habit of regularly observing and promptly replacing brake pads when necessary. This will help prevent potential damage to the brake rotors and ensure optimal braking performance.
If you feel a lack of braking power when applying the brakes, it is possible that the brake pads have significantly lost their friction. In such cases, it is crucial to replace the brake pads to avoid potential serious braking accidents.
Therefore, it is important to develop a good habit of self-checking. Additionally, decreased braking performance can lead to increased consumption of brake fluid. Therefore, when replacing brake pads, it is necessary to check the condition of the brake fluid as well. and you should change good quality link hidden, please login to viewor link hidden, please login to view.
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Here’s the scenario: A customer comes into your store looking for an alternator for their vehicle. You look up the year, make and model and you see an application note on the screen. It tells you to ask the customer whether or not the vehicle is equipped with stop/start technology.
As with many of the technological advancements from the past decade or two, stop/start came about thanks to the need to meet ever-tightening emissions and fuel-economy standards. In the late 1990s to early 2000s, hybrid vehicles were on the rise. These vehicles could propel themselves purely on electric drive, then start the engine as needed
based on driving conditions and driver input.
The problem was that traditional starters weren’t up to the task. They cranked the engine over too slowly, and the process was rather jarring. So, reinforced starter motors and flexplates were designed to combat this issue.
Over time, automakers started to include stop/start systems in more and more vehicles. This is largely due to the fact that it was a simple way for OEMs to reduce carbon emissions from their entire lineup, and they receive certain incentives (or avoid costly penalties) for accomplishing this goal.
Engines today are far more fuel-efficient than those that came before them, but automakers still need to squeeze everything they can from every drop of fuel. Or, in this case, they’re trying to reduce how much fuel is wasted during everyday driving. In an urban environment, vehicles can end up sitting at idle up to 35% of the time. The energy from burning fuel at idle is wasted since the vehicle isn’t in motion, but the vehicle still is producing harmful emissions.
With the ability to stop and start the engine as needed, automakers are able to reduce the carbon footprint of their entire lineup. To you and me, it might not seem like much can be gained by stop/start technology. But, when you think about the number of vehicles on the road today, you can see the benefit a bit more clearly. It’s estimated that stop/start systems can reduce CO2 emissions by up to 10%, and maybe slightly more depending on conditions.
The engine stops whenever the vehicle comes to a stop, then restarts immediately as soon as the driver transitions from the brake pedal to the throttle. Most stop/start systems crank the engine over at a higher RPM when compared to the initial cranking speed. This helps to make the process less jarring and less noticeable to drivers and passengers alike.
Is a Stop/Start Alternator Different?
The short answer is yes, but how so varies from one automaker to the next. Many modern-day alternators will have some sort of integrated control module on board. However, a stop/start alternator may be responsible for starting the engine as well as recharging the battery. This unit is commonly referred to as a starter/alternator.
A starter-alternator is used by the PCM to crank the engine via the belt drive. The belt may contain more teeth (the belt may be wider) due to the load and stress applied while cranking. Starter-alternators boast faster engine startup than traditional starters, and they can do it without making as much noise or vibration. The traditional starter will crank the engine for the initial startup, then the starter/alternator will handle all of the restarts until the next driving cycle.
How long does a traditional alternator typically last? In most cases, one could expect an alternator to last for 90,000 to 120,000 miles, maybe more. A stop/start alternator should see a similar life expectancy. If the alternator fails within 10,000 to 20,000 miles, there might be another issue that’s causing the premature failure. This could include a bad battery; wiring issues (loose connections, corrosion, intermittent shorting, etc.); overload from non-factory electronics; and/or a faulty voltage regulator (though these days this is usually integrated into the alternator).
Tips and Tricks
Stop/start might not be very popular among consumers, but this technology has led to multiple innovations and changes across the industry. For example, electric air-conditioning compressors and water pumps have been developed so that they can operate while the engine is off.
So, what should you tell your customer if they’re replacing a stop/start alternator? Try to make sure they’re repairing the problem – not just a symptom – and sell them the complete repair. If their vehicle has a starter/alternator, they should be inspecting the condition of the entire belt drive. This includes the pulleys, the belt and especially the tensioner. If the belt isn’t tensioned properly, they could experience a number of symptoms, including noises, improper charging voltage, intermittent cranking issues and more.
Don’t forget about the battery and cables! Always replace the battery with one that’s comparable to the OE-specified unit. The main battery typically is either an absorbent glass mat (AGM) or an enhanced flooded battery (EFB). These batteries are more advanced, and better able to support the increased number of charging cycles and additional load placed on the system by the stop/start features. Clean all electrical connections and protect them if necessary to prevent future corrosion.
As always, it’s best practice to reference the OEM service information whenever servicing the alternator on a stop/start vehicle. Always respect the OEM’s recommendations when it comes to specific tooling, torque specifications and tightening sequences. Whenever possible, connect a scan tool to the vehicle and look for fault codes. A scan tool that’s capable of bi-directional communication might be required to reset the battery-recognition or battery-life monitor. CM
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