At K & M Auto Services we are very experienced at air conditioning repairs in Portland. We will inspect the compressor and drive the belt for signs of damage. We will also inspect the whole system and check for leaks or cracks where refrigerant might be escaping. If you don’t have enough refrigerant, we can completely recharge you’re A/C for you and fill it with brand new refrigerant. Basically, if there is any problem with any part of your air conditioning system, we can go in and fix it.
You may not think about it that often, but your car’s air conditioning system is actually quite important. Not only does your air conditioner keep you cool on blistering hot summer days, but it can also remove humidity in your passenger compartment that fogs up the inside of your windows and windshield. If not for your air conditioner, you would have to wait for a much longer for the condensation on your windows to disappear.
Every automotive air conditioner comes with three main parts: a compressor, a condenser, and an evaporator. The compressor is a pump that is powered by a belt that attaches to the engine’s crankshaft. The compressor pumps refrigerant into the condenser. In the condenser, the refrigerant is cooled down with airflow until it turns back into its liquid form. The liquid refrigerant is then piped through the receiver-dryer and expansion valve on its way to the evaporator.
The liquid refrigerant is cold when it enters the evaporator. It has a very low boiling point, so the temperature in the passenger compartment of your car will actually cause the refrigerant to boil and turn into a gas again. The gaseous refrigerant flows into the passenger compartment and absorbs heat, while a fan blows cool air in from the evaporator. Eventually, the refrigerant re-enters the compressor, gets re-pressurized and the whole cycle starts over again.
While you’re there, let us perform a Touch® Courtesy Check, which includes a visual check of the following items:
Oil change near me? The next time you ask this question, just look for your neighborhood K & M Auto Repair Service.
For over 60 years, Car Repair Service has been helping drivers across North America maintain their vehicles. With ASE-certified mechanics in all of our stores, we can take care of all of your auto repair and maintenance needs. From oil changes, filter replacements, and fluid flushes to brakes and brake repair, shocks and struts, muffler repair, tires, and wheel alignment, we’ve got you covered.
Use the quick links in the gold bar to book an appointment at your Car Repair Service store today!
Most cars on the road today use multi-grade oil — one that can work efficiently in cold and hot weather. A multi-grade oil is rated by two numbers, such as 5W-30.
About the oil classification system.
Each engine oil comes with a classification indicating its viscosity, which is its friction or resistance to flow. In a multi-grade oil, the first number indicates how the oil will flow when it is cold. The lower the number, the lighter the oil and the better it will perform at lower temperatures. The second number indicates the thickness of that same oil at high temperatures. For example, a 5W-30 oil will flow as a 5-weight oil at zero degrees Fahrenheit and as a 30-weight oil at 210 degrees Fahrenheit
Why viscosity is a concern.
During cold starting, only a small amount of oil is present in the upper parts of engines. To lessen the friction when upper engine parts, such as the valve train, pistons, overhead cam and cam bearings, scrub against each other, a lower viscosity allows the oil to reach the components more quickly.
Why 5W-30 and 5w-20 oils are so popular.
Many vehicles today leave the factory with 5W-30 or 5w-20 engine oil. Vehicle manufacturers recommend them because they are lighter oils that perform well in a range of temperatures and help improve gas mileage.
Not all motor engine oils are 100% petroleum. Synthetic oils, which are primarily chemically compounded lubricants, are also available. They can provide:
Which oil is right for your car?
The simplest and safest way to find out is to check your owner’s manual…or talk to your Midas mechanic.
Oil filters are designed to trap foreign particles suspended in the oil and prevent them from getting to the engine bearings and other parts.
Your vehicle relies on a variety of fluids to operate its brake, steering, transmission, engine cooling and other systems. When these fluids become degraded or are at incorrect levels, damage to other components may occur…so always follow the manufacturer-recommended service schedule.
Automatic Transmission Fluid
This is typically an oil-based fluid used in a transmission that lubricates and cools the transmission and provides hydraulic pressure to shift gears automatically.
This is the hydraulic fluid used to transmit pressure through the brake lines in a brake system providing stopping power and protecting hydraulic brake components from internal corrosion.
This is the mixture of water and antifreeze used in an engine cooling system to dissipate heat and maintain the engine’s temperature throughout its operating range.
Starting & Charging
The battery starts your car, powers on-board computers and supplies emergency power needs. A weakened battery causes stress on alternators and starters, especially during extreme temperatures. Let Midas test and inspect your battery regularly.
Clean air filters can increase engine performance, boost fuel mileage and reduce engine wear. Cabin air filters can minimize airborne contaminants in the passenger compartment and improve heating/cooling efficiency.
Touch® Courtesy Check
The Midas Touch® Courtesy Check is fast, efficient and covers many items on your vehicle’s preventive maintenance schedule. We’ll conduct a visual check, looking inside, outside, under the hood and under the vehicle, then provide you with a written report.