How to Turn off Power Steering
Power steering is an important feature that helps make driving easier and more comfortable. It helps you turn the wheel with less resistance and takes away the strain that comes from manual steering. However, there might be times when you need to turn off power steering to avoid any damage ...
What Wheels Fit S10?
The Chevrolet S10 is a popular mid-sized pickup truck built by General Motors from 1982 to 2004. As with any vehicle, it is important to choose the right type of wheels for your S10. Whether you are looking for traditional steel wheels or something more unique like chrome alloy or ...
Ford Explorer Shift Cable Adjustment
In your Ford Explorer, the shift cable plays an essential role in ensuring a smooth and efficient driving experience. This crucial component allows you to switch between different gears. However, over time, it may become misaligned, potentially leading to challenges while operating your vehicle. If your car isn’t transitioning between ...
How Much Does a Rim Weigh?
A car’s rim is an important part of its overall look and performance. It is the outermost part of a wheel and serves to hold the tire in place. But how much does a rim weigh? The answer depends on multiple factors, such as size, material used, and design. Keep ...
Temporary Fuel Pump Fix: a Comprehensive Guide
The fuel pump is an essential part of a vehicle's engine. Without the fuel pump, your vehicle won't run. If your fuel pump fails, you can be stuck on the side of the road with no way to get home. Fortunately, you don't have to wait for professional help or ...
Crankshaft Seal Replacement in Your Vehicle
The crankshaft seal is an important part of your vehicle's engine. It helps to keep oil from leaking out from around the crankshaft, ensuring that your engine runs smoothly and efficiently. Knowing how to replace a crankshaft seal is a necessary skill for any car owner or mechanic. In this ...
Car Seat Recovering: How to Reupholster Your Vehicle
Have you ever wanted to update the look of your car’s interior without paying a fortune for a professional job? Reupholstering your vehicle’s car seats is a great way to do just that. With the right materials and some patience, you can give your vehicle’s interior an upgrade in no ...
How to Take Off a Door Panel
Removing a vehicle's door panel is a simple task that can help you troubleshoot or fix issues with the window, door handle, or other components of the door. It's an excellent first step in the DIY automotive world, often leading to other more advanced maintenance tasks. It’s important to be ...
Degreeing a Camshaft – a Comprehensive Guide
Degreeing a camshaft is an important part of any engine build. It is the process of adjusting the camshaft so that it opens and closes the valves correctly. Degreeing a camshaft can help to increase performance, reliability, and efficiency. While degreeing a camshaft may seem like an intimidating task, with ...
How to Install Camshafts – Step-by-step Guide
Installing camshafts can be a daunting task, but with the right tools and knowledge, it can be done easily. Camshafts are responsible for controlling the timing, duration and lift of the intake and exhaust valves in an engine. When installing a camshaft there are several steps involved including understanding what ...
Troubleshooting Fuel Gauge Reading Incorrectly
Understanding how your vehicle's fuel gauge works can help you to identify and fix the issue when it stops working correctly. In this article, we explain why you might have an incorrectly reading fuel gauge and provide step-by-step instructions on how to diagnose and fix this issue. Why Is My ...
Understanding Thrust Bearing Location in Vehicles
A thrust bearing is a specialized type of bearing designed to handle thrust loads and help reduce friction between rotating shafts. These bearings are generally found in automotive applications, including cars and light trucks, as well as other mechanical devices. The purpose of a thrust bearing is to keep the ...
What Is Floating Gears in the Vehicle?
Floating gears are a transmission technique employed in some vehicles that offer unique advantages in certain driving conditions. This article delves into the concept of floating gears, how they work, the different types available, and the advantages and disadvantages of using them. What Are Floating Gears? Floating gears are a ...
Solving Dodge Dakota Starting Problems
The Dodge Dakota is a mid-size pickup truck that has been around since 1987. It is a reliable vehicle, but like any other automobile, it can have its fair share of starting problems. In this article, we will look at some of the common causes of starting issues and how ...
The Ultimate Guide to Portable Jump Starters and Their Functionality
It's an all too familiar scenario: you're enjoying a scenic road trip, or heading to an important meeting, and suddenly, your vehicle grinds to a halt because of a dead battery. It's in these moments, far from any help, that a portable jump starter proves its worth. These compact, battery-powered ...
Diagnostic Transmission Problems in Jeeps
Having a properly functioning transmission is critical for the safe operation of your Jeep. A malfunctioning transmission can cause severe damage to your vehicle and even injury to you or other drivers. That’s why it’s important to recognize the signs of common transmission problems in Jeeps so you know when ...
Air in Radiator Symptoms: What to Look out For
It’s no secret that air in your radiator can cause a variety of problems for your car. When the air gets trapped in the radiator, it prevents the coolant from circulating properly, which can lead to overheating and inefficient performance of your vehicle. To ensure that your car is running ...
Negative Fuel Trim – Causes, Symptoms and Solutions
Negative fuel trim is a term used to describe the engine’s ability to adjust its air-fuel ratio to maintain optimal performance. It is one of the most important aspects of engine management and can have a significant impact on your vehicle’s performance. This guide explains what negative fuel trim is, ...
Understanding an External Head Gasket Leak
A head gasket is a very important part of an engine’s cooling system. It seals the chambers inside the engine block and cylinder head, which helps regulate the flow of coolant and oil between them. When a head gasket fails, it can cause an external leak in your vehicle. In ...
Understanding Rear Differential Noise
Rear differential noise is an unwelcome sound that some car owners may experience from their vehicles. This noise is often a sign of trouble and should not be ignored as it can cause serious damage to the rear differential of a vehicle if it goes unchecked. In this article, we ...
What Is the Normal Oil Pressure?
Oil pressure is an important, yet often overlooked, factor when it comes to vehicle maintenance. It is responsible for lubricating and cooling the engine, which helps maintain its efficiency. Without proper oil pressure, your engine could overheat and suffer damage. So, what is normal oil pressure in a vehicle? What ...
Replacing the Jeep Cherokee Oil Pressure Sending Unit
The oil pressure sending unit in your Jeep Cherokee is a part that monitors the amount of oil pressure in your engine and sends an electrical signal to the vehicle’s gauge cluster to let you know when the oil pressure is low or high. If your engine’s oil pressure drops ...
What Is a Forged Wheel?
Forged wheels are an increasingly popular choice for customizing the look and performance of your vehicle. They provide increased strength, lighter weight, and improved handling, making them a great addition to any vehicle. But what is a forged wheel? What sets them apart from other types of wheels? In this ...
Changing Transmission Filter Easily and Safely
Changing a transmission filter is an important maintenance task that should not be overlooked. A transmission filter helps keep dirt and debris out of your car's transmission, which in turn keeps the transmission running smoothly and efficiently. Without a clean filter, you might find yourself with some serious mechanical issues ...
Are Volvos Expensive to Maintain? A Comprehensive Guide
When shopping for a car, one of the most important factors to consider is cost. Not only is the purchase price of the vehicle an important factor, but you’ll also want to consider long-term costs like insurance and maintenance. Volvos are well-known for their safety and reliability, but are they ...
Resetting a Car Computer – Step-by-Step Guide
Resetting your car's computer is a process that takes a few minutes and can help you solve issues related to your car’s performance, such as engine stalling or low fuel efficiency. In this guide, we will explain the different tools required and provide step-by-step instructions on how to reset your ...
Why Is My Coolant Boiling?
Do you ever find yourself asking "Why is my coolant boiling?" If so, you're not alone. Boiling coolant is a common problem and can occur for many different reasons. In this article, we'll discuss the causes of a boiling coolant and provide solutions for keeping your engine running smoothly. What ...
Understanding Pressure in Gas Tank
Vehicles are equipped with gas tanks that contain fuel for combustion in the engine. These tanks are designed to hold fuel at a certain pressure, which is important for efficient operation of the vehicle. Understanding pressure in the gas tank can be helpful when diagnosing issues with a car or ...
Identifying an Improperly Installed Car Air Filter
A car air filter plays an important role in the health of an engine by keeping out dust and dirt to promote efficient performance. Replacing a car air filter regularly is key to proper engine maintenance, yet it can be easy for a do-it-yourself owner to improperly install their new ...
The Difference between Cold Tire Pressure Vs Warm
Proper tire pressure is essential for safe and efficient driving. When it comes to proper inflation, there is a key distinction between cold tire pressure and warm tire pressure. It's important to know the difference between the two, how the temperature affects tire pressure, and how to properly inflate your ...
How to Tow a Rear Wheel Drive Car
Towing a car is something that many people may need to do from time to time. Whether you’re transporting a vehicle to a new location or temporarily moving it for repairs, understanding how to tow a rear wheel drive car is important. This article will provide you with step-by-step instructions ...
Adding a Towing Package – What You Need to Know
Adding a towing package to your vehicle can give you the flexibility and convenience of having a trailer or other heavy load when you need it. Whether you're taking a weekend getaway or hauling a large load, adding a towing package can be an essential part of your vehicle’s set-up ...
How to Remove Sway Bar Links
Removing sway bar links is an important part of automotive maintenance. Sway bar links connect the sway bar to the suspension of your vehicle, and they help to improve handling and stability while driving. They should be checked regularly to make sure they are in good condition, as worn or ...
What Are Car Rims Made Of?
Car rims, also known as wheels, are an integral part of a vehicle. The rims provide stability to the vehicle and support its weight as it moves along the road. Wheels are commonly made of various types of materials which include steel, magnesium alloy, aluminum alloy, carbon fiber composites and ...
How Tight Do You Tighten Your Spark Plugs?
It is important for the proper functioning of your engine that the spark plugs are tightened properly. The correct torque setting will ensure an optimal combustion process, reduce wear, and tear, and prevent engine damage. This guide will explain all the factors you need to consider when tightening your spark ...
Loud Radiator Fan: Troubleshooting and Solutions
A loud radiator fan can be a nuisance. Not only does it generate too much noise, but it is also a sign that something is wrong. The noise could indicate a problem with the fan or an underlying issue with the engine coolant system. To ensure the longevity of your ...
Solving Issues with Rough Idle and Acceleration
Having an issue with your car's engine can be very frustrating and sometimes even dangerous. One of the most common issues is a rough idle or acceleration, which can cause your vehicle to shake, surge, or bounce on the road. To help you diagnose and fix this problem, we've created ...
Repairing and Preventing Oil Leak Front Main Seal
Oil leaks from the front main seal of a car can be an annoying, time-consuming, and potentially costly problem to address. Not only does it affect the performance of your vehicle, but if left unchecked, it can lead to further damage to other components of the engine. Fortunately, there are ...
Solving Chevy 350 High Idle Problem
A high idle problem is a frustrating issue for car owners with Chevy 350 engines. High or low idle can lead to dangerous driving conditions and cause excessive wear on the engine components, leading to costly repairs. Fortunately, diagnosing and addressing high idle problems with Chevy 350 engines is relatively ...
Car Won’t Take Gas: Troubleshooting Your Vehicle
When you try to fill your gas tank and nothing happens, it can be a very frustrating experience. If you've ever been in this situation, you know how worrisome it can be. Fortunately, diagnosing and fixing the problem is not as difficult as it seems at first glance. In this ...
Troubleshooting Excessive Noise After Tire Rotation
Noises after tire rotation can be a source of annoyance and even confusion for many car owners. When you rotate your tires, you expect to get a smoother ride, not loud noises coming from your wheel wells. If you're wondering why this is happening and what you can do to ...
Air Pump Deflating Tire – A Comprehensive Guide
Air pump deflating tire can be necessary for a variety of reasons. It could be that you want to rotate your tires for better wear and tear, or you need to transport your car with the tires partially deflated on an open trailer. Whatever the reason, it is important to ...
Jeep Liberty Dash Light – A Comprehensive Guide
Understanding your dashboard warning lights is important for maintaining the health of your Jeep Liberty. By familiarizing yourself with the meanings and functions of each dashboard light, you can quickly identify potential problems before they become serious. Knowing how to respond to a warning light can also help you troubleshoot ...
Does Motor Oil Evaporate? All You Need To Know
Motor oil is a critical component of any vehicle's engine, providing lubrication, cooling, and cleaning. It's important to keep your car in good condition and change your oil regularly. However, many people wonder if motor oil can evaporate. In this article, we explore the answer to this question and provide ...
Understanding Oil Gauge Fluctuating & How To Fix It
An oil gauge is an important indicator of your vehicle’s engine health. It provides real-time information about how much oil pressure is being generated in the system and helps you determine when it’s time for an oil change. However, when the oil gauge starts to fluctuate, this can be a ...
What Is the Shoulder of a Tire?
The shoulder of a tire is an important part of its design and performance. It is the area between the tread and sidewall of a tire that not only affects traction but also impacts how a tire wears over time. Understanding what the shoulder of a tire is, how it ...
Should Control Arms Be Replaced in Pairs?
When it comes to vehicular repair and maintenance, it is important to consider the best practices for the job. When it comes to replacing control arms on a car, many automotive experts recommend replacing them in pairs. Replacing them in pairs can provide a number of advantages, but there are ...
Replacing the Splash Shield in Your Vehicle
A splash shield is a thin metal or plastic barrier designed to deflect water and other debris away from the underside of your vehicle. Without a splash shield, mud, rocks, dirt, and other debris can be thrown up by the tires and cause damage to vital components of your car, ...
Testing Your Car’s Starter
Testing your car's starter is an important part of regular vehicle maintenance. A starter test helps to identify and diagnose any issues before they become more serious. This article provides a comprehensive guide on how to test your car's starter and what steps you should take to ensure a successful ...
Difference Between Alloy and Premium Wheels
The wheels on a car are more than just a fashion statement. They can also play an important role in vehicle performance and handling. The right wheels will enhance traction, improve acceleration, and reduce driving noise. Knowing the difference between alloy and premium wheels can help you choose the best ...
Resolving a Wet Floor on the Driver Side
If you've noticed that the floor on the driver side of your car is wet, it can be a cause for concern. Water in your car can cause mold growth and other damage, leading to costly repairs. Fortunately, there are many possible causes for this issue and several solutions you ...
Diagnosing and Fixing Burnt Out Spark Plugs
Having a car that is in good working order is important for ensuring a safe and comfortable journey. The spark plug is one of the most important parts of your car's engine. If it becomes faulty, the engine will not be able to combust fuel correctly and will become inefficient ...
Repairing an Oil Leak From Your Car’s Intake Manifold
An oil leak from the intake manifold can be a serious problem for your car's engine. The intake manifold is responsible for bringing air and fuel into the engine. If it begins to leak oil, it can cause numerous issues, such as decreased performance, excessive smoke from the exhaust, or ...
Understanding Why Your Oil Turns Black So Fast
Oil plays an important role in keeping engines running and is essential for keeping all the moving parts inside them lubricated. Unfortunately, oil can turn black very quickly, meaning that it needs to be changed regularly. Understanding why oil turns black so quickly is essential for keeping your engine healthy ...
Changing Your Car’s Engine – Step-by-Step Guide
Changing an engine can be a daunting task. It is a complex process that requires quite a bit of knowledge and skill. Many people prefer to take their cars to mechanics or technicians for such jobs, but if you want to do it yourself, this comprehensive step-by-step guide will teach ...
Can Gas in Oil Damage an Engine?
Gas in oil can cause serious damage to an engine if it is not taken care of immediately. It occurs when gasoline enters the crankcase and mixes with the engine oil, creating a sludgy mess that can quickly clog up the system and prevent it from functioning correctly. Understanding what ...
Understanding the Causes of Outside Edge Tire Wear
Tire wear can be a serious concern for any car owner, as it indicates that there may be something wrong with your vehicle or tires. Outside edge tire wear is a type of tire wear that occurs when the outer edges of the tires become worn down more quickly than ...
Troubleshooting Check Oil Lights After an Oil Change
Changing your car's oil is necessary for routine vehicle maintenance, but it may lead to the check engine light coming on afterward. If the check oil light comes on shortly after an oil change, there are a few things you can do to troubleshoot and resolve the issue. This article ...
Voltage Regulator Location in Your Vehicle
Your car is filled with electrical components that must be running properly for your vehicle to function correctly. The voltage regulator is an important part of the car's electrical system, and it helps keep the voltage levels balanced throughout your vehicle. Knowing where to find the voltage regulator can help ...
When Oil Pan Gasket Need Sealant
An oil pan gasket is vital to an engine's cooling system. It is a type of seal that helps prevent oil from leaking out of the engine and prevents dirt, grime, and other debris from entering it. The gasket also serves to insulate the engine from vibration and heat. Oil ...
How to Fix a Car’s Alignment Problems
Misaligned wheels can cause various issues, from uneven tire wear to difficulty steering and excessive vibrations at speed. Fortunately, fixing car alignment is a relatively straightforward process that mechanics and car technicians often handle. In this article, we'll discuss the causes of car alignment issues and explain how these problems ...
Can Brake Cleaner Remove Oil?
Whether you're a seasoned mechanic or a DIYer, you must know which cleaners suit specific tasks. One of the most common questions asked is, "Does brake cleaner remove oil?" In this article, we'll look at what brake cleaner is and answer the question about its ability to remove oil. What ...
Understanding the Cost of Replacing a Wheel Bearing
Replacing a wheel bearing can be an expensive automotive repair, but it must be done when it fails. This comprehensive guide will look at what a wheel bearing is, what it costs to replace a wheel bearing, and other factors you should consider when replacing your vehicle's wheel bearings. Identifying ...
Replacing A Neutral Safety Switch in Your Vehicle
The neutral safety switch is an important component of your vehicle that prevents the engine from starting in any gear other than "Park" or "Neutral." If your vehicle is having difficulty starting, then the neutral safety switch may be to blame and should be replaced immediately. This guide will walk ...
How to Unfreeze a Gas Cap
Frozen gas caps can be a major hassle for any driver. If you're dealing with a frozen gas cap, this article is here to help. In this guide, we'll cover the causes of a frozen gas cap, the warning signs of it happening, the steps to unfreeze it quickly and ...
Troubleshooting Your Car That Won’t Start After Getting Gas
Having a car that won't start after filling up with gas can be a very frustrating experience. After all, you just spent your hard-earned money on fuel and now you're stuck. Fortunately, there are some steps you can take to troubleshoot the issue and get your car running again. Read ...
Torque Oil Drain Plug for Engine Maintenance
The oil drain plug is an important component in your engine’s maintenance routine, so it’s important to torque the plug for the best results properly. Torquing the drain plug ensures a secure seal and prevents potential leaks. This guide will provide step-by-step instructions on how to properly torque an oil ...
Troubleshooting Car Stereo: A Comprehensive Guide
Car stereos have become a ubiquitous part of the modern car. With features ranging from streaming music to hands-free calls, these devices can enhance the overall driving experience. However, with all their bells and whistles, car stereos are prone to various malfunctions. The good news is that you can be ...
Connecting Wires To A Fuse Box
Connecting wires to a fuse box is necessary when completing an electrical project or troubleshooting and replacing electrical components. Correctly connecting the correct wires is necessary for safety and optimal current flow. This guide will walk you through safely connecting wires to a fuse box. Safety Precautions Before beginning any ...
All About Low Speed ABS Activation
Antilock Braking System (ABS) is an automotive safety system that helps drivers control the vehicle when braking in sudden, urgent situations. It works by preventing the brakes from locking, thus allowing drivers to maintain control and avoid potential collisions. This safety feature is particularly useful in slippery or wet road ...
Step-by-Step Guide to Adjusting Drum Brakes by Backing Up
Taking care of your car’s brakes is essential for your safety and the safety of your family. As such, adjusting drum brakes by backing up is a crucial skill to have as a car owner. Drum brakes are found in older cars and consist of two brake shoes that press ...
Troubleshooting Your Tire Pressure Light Blinking Problem
A Tire Pressure Monitoring System (TPMS) is an electronic system designed to monitor and maintain the pressure of each tire in a vehicle. A properly functioning TPMS helps alert drivers when their tires have low pressure, allowing them to adjust the tire pressure for optimal performance and safety. The TPMS ...
Antifreeze Odor: Causes and Solutions
Antifreeze is a fluid used in automobiles and other internal combustion engines to protect against frost and corrosion and maintain an ideal engine temperature. It is also known as coolant or heater core fluid, which helps regulate heat transfer in the engine. Antifreeze can be made from either glycol-based liquids ...
How to Fix a Loose Car Bumper – A Step-by-Step Guide
Does your car have a rocking bumper that seems like it can topple over anytime? If yes, then this means that you have a loose bumper that needs immediate attention before it gets worse. As most parts of a vehicle are made of plastic and metal these days, many car ...
Identifying the Sounds of Bad Wheel Bearings
A bad wheel bearing can be difficult to diagnose without the right tools, but certain sounds associated with a failing wheel bearing will help you determine if it needs to be inspected. This article will discuss the common sounds of a bad wheel bearing, other signs of a failing wheel ...
Low Compression in Engine: Causes, Symptoms, and Solutions
Low engine compression can have various causes, from coolant leaks and worn valves and valve seats to piston ring wear or damage, a broken head gasket, or incorrectly adjusted valves. These issues can lead to a decrease in engine efficiency, causing your vehicle’s performance to suffer and increasing the risk ...
ECM vs. ECU: Understanding the Difference
In the modern automotive world, engine control modules (ECMs) and engine control units (ECUs) are two important vehicle components. These two systems are responsible for controlling the performance of the engine. However, it's important to note that they serve slightly different functions, and each plays a vital role in keeping ...
How to Prevent Your Lug Nuts from Loosening
You may not give much thought to the lug nuts holding your car’s wheels in place—until one comes loose, that is! At that point, it’s essential to understand what caused it to loosen so that you can address the issue and keep your car safe on the road. In this ...
How to Identify and Fix a Car AC Condenser Leak
A car’s air conditioning system is essential for providing passengers with comfort and convenience on long-distance journeys or short city trips during hot summer days. If your vehicle’s air conditioning system isn't running efficiently, it may be due to a condenser leak in the system which needs to be identified ...
How To Fix a High Fuel Rail Pressure Sensor Input
A fuel rail pressure sensor (FRPS) is an important component in modern-day fuel systems, as it is responsible for regulating the amount of fuel sent from the fuel injectors to the engine cylinders. It works by measuring fluctuations in the pressure inside the rail that supplies pressurized fuel to all ...
Can Relays Be Interchanged?
Relays are an essential component in many applications, from automotive electronics to industrial control systems. A relay is an electronic switch that's used to control the flow of power through an electrical circuit by opening or closing contacts within the circuit itself. It’s important to understand when it’s safe and ...
What to Do When Your Low Coolant Light Comes On and Off
If you're driving in your car and suddenly notice that the low coolant light has come on, it's important to take action immediately. Although this warning signal usually means something is wrong with the cooling system, there can be other causes for this to happen as well, making it crucial ...
Turning Ignition Kills Power: Causes and Solutions
If your vehicle's power goes out when you turn the ignition, it can be an extremely frustrating experience. Understanding what might be causing the problem and how to diagnose and fix it can save you time and money in the long run. This guide will discuss what happens when you ...
Diagnosing and Fixing Engine Surging Under Load
Engine surging under load is a common problem for many drivers. Several factors can cause it, and it can be difficult to diagnose the underlying cause. This article will discuss the symptoms of engine surging under load and the possible causes. We will also go over how to diagnose the ...
Car Goes Forward in Reverse Automatic: Causes and Solutions
Understanding why a car goes forward in reverse automatic is crucial for vehicle safety and maintenance. The issue may arise due to several reasons, such as low transmission fluid levels, worn transmission components, or faulty solenoids. Addressing the problem promptly and ensuring regular vehicle maintenance can help prevent this from ...
How to Test for Bad Gasoline: Signs and Solutions
Gasoline is a volatile fuel that is essential for powering your vehicle. It's important to have quality gasoline to ensure your vehicle's reliable and safe operation. Without it, you risk poor engine performance, decreased fuel efficiency, and other issues which could lead to dangerous situations on the road. In this ...
Comparing Oil Pressure Switches and Sensors
Oil pressure switches and sensors are essential components in many vehicles, allowing drivers to monitor the health and performance of their engines. Understanding the difference between these components is important for any DIY car enthusiast. In this article, we'll compare oil pressure switches and sensors, explain how they work, highlight ...
Dealing with Frost on the Inside of Your Windshield
Frost on the inside of your windshield can be a major nuisance and even pose safety risks. Frost on the inside of your windshield is caused by a combination of condensation, fog, and frost that builds up due to changes in temperature, humidity, air circulation, and car maintenance. To prevent ...
The Benefits of Adding Power Steering to Your Car
Power steering is one of the most important features of modern cars that make driving easier and safer. Power steering allows you to turn the steering wheel with less effort and helps you to maintain control of your vehicle at all times. Adding power steering to your car can be ...
No Check Engine Light: Common Causes and Solutions
In today's increasingly complex vehicles, the check engine light is important in alerting drivers to potential vehicle issues. Unfortunately, many drivers need to learn the check engine light and why it is so important for their vehicle. With this article, we'll go over what a check engine light is, why ...