My Mobile Mechanic

  Common Signs of Brake System Problems There are a few common signs you should pay attention to that may indicate a problem with your brake system. If you notice any of the following symptoms – take a close look at replacing parts in your braking system.  How do they sound? The first warning sign to pay attention to is squealing. Your brakes should operate with very little or no noise at all. Many brake pads have “wear indicators” that are designed to cause squealing when they are worn down. Be sure to have them checked before the squealing sound turns into a grinding sound. How does your vehicle drive? Another problem you may experience is your vehicle pulling to one side or your steering wheel shuddering side-to-side when you brake. The issue can be a seized or hanging caliper, rotor thickness or warped rotors. These conditions can also cause noise, excessive wear and poor braking. How hard do you have to push your brake pedal? If you find you’re having to push your brake p...

  How Does a Car’s AC System Work? To keep your vehicle cool, your car's air conditioning system uses a refrigerant to cool and dehumidify the air. Today’s vehicles have very specific climate controls that allow you to set the temperature exactly where you need it to stay comfortable. To accomplish this task, the AC system uses these components: Compressor  – The compressor compresses the vapor refrigerant, putting it under high pressure and sending it to the condenser. Condenser  – The condenser sits right in front of the radiator. It takes the high-pressure refrigerant from the compressor and removes heat from it, cooling it down into a liquid.  Receiver  – The receiver holds the refrigerant while it waits to move into the evaporator. It also filters the refrigerant to remove any moisture. Evaporator  – The cold refrigerant from the receiver moves through a valve into the evaporator. The hot air from the cabin blows past the evaporator core, where the ref...