Affordable Auto Repair near Diamond Bar, CA

Reasons Why Your Check Engine Light Might Be On

Every car owner dreads the day that their check engine light comes on. It could be something small, or it could mean that you need a costly vehicle repair. Modern-day vehicles are made run with hardly any problems if they are properly maintained, but periodic mechanical issues still do occur. If your check engine light does come on one day, you might be persuaded to ignore it. After all, as long as your car is still running you should be okay to drive it, right? Not exactly. Your check engine light appears when part of your vehicle needs some attention. Sometimes it's minor, but other times it could be a serious problem waiting to happen.

To avoid an expensive automobile repair, it's in your best interest to get to the root of your check engine alert as soon as possible. Bring your vehicle into AI and Sons auto shop and we will diagnose the problem for you. We are the most trusted auto repair shop in the city. No car repair service is too big or too small for our dedicated team of mechanics. Here are some common reasons your check engine light might come on:

Mass Airflow Sensor

You mass airflow sensor is different from your oxygen sensor but still performs a vital function in your vehicle. This sensor is responsible for measuring the total about of air that enters into the combustion chamber of your engine. From there, it will establish the proper air to fuel ration necessary for your engine to run smoothly. When this part of your engine fails, it could lead to issues with your spark plugs, oxygen sensor, and catalytic converter. Other than your check engine light, you may not know that your mass airflow sensor is experiencing a problem until further occurs.

The best way to avoid an unexpected trip to the auto shop is to have scheduled maintenance checks, oil changes, and other routine automotive services performed on your vehicle by a reputable auto shop. If your check engine light does come on, be sure to bring it in to the trusted mechanics at AI and Sons right away. We will quickly diagnose the problem and give you a fair and honest quote for your automotive repair. From breaks, to transmissions, we pride ourselves on giving all of our customers top quality auto service at affordable prices. Come find out for yourself why we stand out above the rest of the auto shops in town.

Catalytic Converters near Diamond Bar

The function of a catalytic converter is to decrease the amount of carbon monoxide released into the environment by your vehicle. Carbon monoxide is incredibly harmful to the environment, so your catalytic converter transforms it into carbon dioxide instead. If you are good about getting routine maintenance performed on your automobile, you will likely never have a problem with your catalytic converter. However, if you've neglected to have your vehicle checked by a professional mechanic on a regular basis, it may fair and cause your check engine light to come on.

Vacuum System Issues

Your vehicles vacuum system serves several different purposes. Your brake booster is operated by a vacuum, for example. But your vacuum system is also used to keep harmful emission levels down by filtering the fumes that are generated when fuel evaporates within your engine. Sometimes, your vacuum system can experience a leak which renders it unable to perform these vital tasks within your engine. Vacuum leak repairs are a relatively simple vehicle service, however, if left unchecked a leaking vacuum could lead to bigger problems.

Oxygen Sensor Malfunction

The oxygen sensor in your car or truck is responsible for detecting the presence of oxygen together with carbon dioxide being released through your vehicles exhaust. When the sensor registers oxygen, it will regulate your fuel in such a means that combustion is increased to help avoid engine jerking. If your oxygen sensor fails, your car or truck may still seem to be running normally. However, you may soon find that you're experiencing fuel efficiency issues as your car or truck runs through gas at a faster pace. What's worse, certain components within your engine, such as your catalytic converter, might begin to deteriorate.

Spark Plug Malfunction or Malfunction

Your vehicle relies on your spark plugs to ignite properly. Spark plugs emit electricity that initiates an ignition that is needed for combustion and the burning of fuel. Spark plugs can go bad over time, leading to them to lose their ability to generate the high volt electricity needed for them to work appropriately. When this happens, you will typically notice that your automobile vibrates when you come to a stop light or if you're in slower traffic. In some cases, your car may spontaneously shut down together. Looking into your check engine light correct away could help you avoid these problems. Your trusted mechanic at AI and Sons can quickly replace your worn spark plugs to make sure you're not left stranded at a stop light.

Another problem that might cause your check engine light to come on is damage to the wires attached to your spark plugs. Like the spark plugs themselves, these wires can become worn and need changing to keep up engine performance.

A Loosened Fuel Cap

That's right, sometimes your check engine light might come on for something as simple as a loose fuel cap. When you pump gas into your vehicle, you may accidently leave your fuel cap on too loose, or neglect to close it at all. When that happens, your check engine light might come on as a means to warn you that you need to tighten your fuel cap appropriately. Other times, your fuel cap may be worn to the point that it does not tighten appropriately. In this instance, simply swapping your fuel cap should take care of the problem. If a loose fuel cap is the cause of your check engine light coming on, you can easily remedy the problem yourself without the need of an auto repair service professional.

We are a full-service auto repair shop and we are trusted by our many customers.

• Serving Rancho Cucamonga for over 50 years
• Computer Diagnostic check
• No Appointment Necessary
• Tow Service Available
• Tire, Brake, and Transmission service
• Battery Replacement
• Diesel vehicle service
Great to have a local auto shop that you can trust. Al & Sons have been there for me for years! They never try selling extra service that is not needed. I always bring car for all repairs and services. They even towed my broke down car to the shop.
Stephen Her Avatar
Stephen Her
Have been coming to this shop for at least 20+ years and it’s the only shop I have ever trusted my cars and motor home too. You are treated like family and they are the most trustworthy group of guys who really care about you and making sure your automative needs are taking care of. Won’t try and upsale you in anyway and really take care of the problem with your car. Highly recommend them to take care of all your automotive needs! Thanks Johnny and the guys for always being there for me!!!
Vicki Payne Avatar
Vicki Payne
I have been going to Al and Sons for years, they have fixed a couple things on two of my cars from oil changes to replacing the motor in my Chrysler 300c. I always recommend Al and Sons to anyone mentioning that they need a mechanic, and have never had anyone report a bad experience back to me. Thanks again for taking care of me, customer for life!
Dave Webster Avatar
Dave Webster
Al & Sons Automotive - 7126 Amethyst Ave, Rancho Cucamonga, CA 91701