O'Fallon Auto Repair

The rear main seal can be likened to a heroic figure for your engine, diligently ensuring that oil remains in its proper place while keeping unwanted contaminants at bay. Situated at the aft end of the engine crankshaft, this modest seal plays a vital role in maintaining the lubrication of engine components, preventing any unfortunate oil spillages on your driveway. A malfunctioning rear main seal could result in an oil leakage conundrum that would require your immediate attention.What is a Rear Main Seal? Imagine your car's engine as a complex network of parts working together to keep your vehicle running smoothly. One crucial component in this intricate system is the rear main seal. Located at the back of the engine, this seal acts as a barrier between the engine block and the crankshaft, preventing oil leaks and keeping the engine lubricated. What does it do? Rear main seals play a vital role in maintaining the integrity of th ... read more

Battery terminal corrosion is a common and frustrating issue that many vehicle owners encounter, which can potentially harm your automotive batteries.  What causes battery terminals to corrode? Battery terminals corrode as a result of chemical reactions that take place between the battery acid and the metal terminals. Factors such as humidity, extreme temperatures, and exposure to road salt or other chemicals can expedite the corrosion process. How can I identify terminal corrosion? There are various indicators of terminal corrosion that one should take note of. Look for visible signs such as a buildup of white or greenish-blue residue on the terminals. Additionally, you may experience performance-related problems like difficulty starting the vehicle or headlights that appear dim, which can be attributed to corroded terminals. How can I prevent battery terminal corrosion? Regular maintenance is the key to preventing battery te ... read more

What is a Heater Core? The heater core is a vital component of your car's heating system. It looks like a mini radiator and is responsible for providing warm air to your vehicle's cabin. The heater core is a crucial component of your vehicle's heating system that plays a key role in keeping you warm and comfortable during colder months. While it may not be something you think about often, a blocked heater core can lead to a lack of heating inside your car and cause inconvenience and discomfort. The Importance of a Functioning Heater Core A functioning heater core ensures that you stay comfortable in cold weather by providing warm air to defrost your windshield and keep the cabin cozy. It plays a crucial role in regulating the temperature inside your car. How Does the Heater Core Work? The heater core works by utilizing the heat generated from the engine's coolant system. Hot coolant from the engine circulates throug ... read more

Let's talk about something super important when it comes to cars – the alternator! This little guy plays a huge role in making sure your car runs smoothly. It's responsible for generating electrical power that keeps your car's battery charged up and ready to go. Without a working alternator, your battery would be drained in no time, leaving you stranded and unable to start your car. Trust me, that's not a fun situation to be in! So, it's super important to make sure your alternator is in good shape to avoid any inconvenient breakdowns. Now, let's talk about how the alternator powers all those cool electrical components in your car, like the lights, radio, and air conditioning system. You know how important electricity is for these things to work properly, right? Well, a malfunctioning alternator might not be able to provide enough power, which can result in dim headlights, a wonky radio, or a less-than-cool air conditioning system. That's definitely no ... read more

Now that winter has arrived with its icy grip, the last thing you want is a car heater that decides to call it quits. We all know that feeling of desperation as we sit shivering behind the wheel, desperately cranking up the heat dial, but to no avail. A functional car heater is not just a luxury; it's a necessity for staying warm and comfortable during those chilly drives. Here’s some frequently asked questions regarding vehicle heaters: Why is my car's heater blowing cold air? There are several possible reasons why your car's heater might be blowing cold air. It could be due to low coolant levels, a malfunctioning thermostat, a clogged heater core, or issues with the blower motor. Conducting a thorough diagnosis can help identify the specific cause and determine the necessary repairs.   Can I still drive my car if the heater isn't working? Yes, you can still drive your car even if the heater isn't working. However, it is importan ... read more