Posted on 12/6/2011
Modern cars and trucks in and around run on 12 volt electrical systems. 12 volts is enough to get the job done without having so much power that there is danger of electrocution. But today's vehicles have more electrical components and do-dads than ever before. This really strains your electrical system, making it hard for the battery to keep up. Think about it: electric seats, seat heaters, power locks, windows and sun roofs. And then we have all the power outlets for our cell phones, computers, and DVD players. We also have navigation systems and powerful stereos. Plus there are all the engine and transmission computers, traction control, stability control, anti-lock brakes, sensors and on and on. Even the security system is running off the battery while the car is turned off. Fortunately, battery technology has given us resilient batteries that are able to meet these strenuous requirements. But the fact is, batteries just wear out over time. Eventually, every ... read more
Posted on 12/1/2011
The last new car sold with a carburetor in North America rolled out of the dealership in 1990. Since then, all new vehicles have had fuel injectors. In very simple terms, a fuel injector is a valve that squirts fuel into your engine. Your engine control computer tells the fuel injector how much gas to deliver as well as the precise time it should be delivered. Of course this happens thousands of times a minute. Fuel injection is a much more precise way of delivering fuel than carburetors. That translates into better fuel economy and power. Virtually all fuel injectors for gas engines are known as port fuel injectors because they deliver the fuel to a port just outside the cylinder. Port fuel injectors operate at about 40 to 80 pounds per square inch of pressure. A few auto makers have introduced gas direct injection systems on some engines recently. These systems inject the gas directly into the cylinders under very high pressure - hundreds of times the pressure of port injection sy ... read more
Posted on 12/1/2011
What is a cabin air filter? Is it: A filter for a house in the middle of the woods? A fresh, piney scent? A filter for the passenger compartment of your car? Clever you, it's 3. A cabin air filter cleans the outside air before it comes into the passenger compartment. It filters out dust, pollen, spores, bacteria, pollutants, sparrows, exhaust gas and odors. These high tech filters can block particles larger than 3 microns. By contrast, a grain of sand is about 200 microns. Now not all vehicles have cabin filters. They are fairly new on the scene. About forty percent of new vehicles come with cabin air filters, but the number is growing every year. Cabin air filters can make for a very nice driving environment. Your car can be a haven during allergy season with very little dust and pollen getting into the cabin. However, the filter eventually gets clogged. When this happens, your heating and air conditioning flow can become restricted. Th ... read more
Posted on 12/1/2011
A lot of our viewers have asked whether or not they should use their severe service maintenance schedule, which is listed in their car owners' manual. It can be confusing. Let's clear the air on this subject. Cricket Killingsworth is from QMI/Heartland, a manufacturer of automotive products and fluids. She's been in the automotive business for 20 years and is a speaker, a trainer, and a writer. Cricket says there's so much confusion on this topic because, "Most owners' manuals actually have two maintenance schedules. Sometimes these are called ‘regular service' and ‘severe service'. Sometimes they're simply called Schedule 1 and Schedule 2. A severe service schedule recommends that things like an oil change, air filter replacement, and transmission service be done more often: either in fewer miles or in less time. Manufacturers create these specific schedules for each vehicle they make. So there isn't one generic schedule that ... read more
Posted on 12/1/2011
We would like to give you an update on some of the things happening in automotive fluids. You know, cars are becoming more sophisticated everyday - and fluids such as, oil, coolant and transmission fluid are becoming more specialized at about the same pace. The do-it-yourselfer has to be pretty careful so that they do not actually harm their vehicle with the wrong type of fluid. That is why so many car owners rely on the advice of their service consultant to not only get the correct family of fluids, but to suggest the formulation that is best for their car and the way they drive. Let's start with engine oil. If you have been paying attention, you will have noticed a number of new oil weights on the scene in the last several years. Modern engines are built to much tighter tolerances and have very complicated valve trains. The oil must be thin enough to lubricate complicated parts when the engine is cold. The weight of an oil is expressed in terms like 20W-50 or 5W-30. Manufacturers r ... read more
Posted on 12/1/2011
So you've bought a used car in the area. How do you know what you're getting? It is hard to know what you're getting because people in the area sell cars for different reasons. Think about why you've sold cars. Did you just want something new or were there problems that you wanted to run away from. Maybe it was a little of both? Used cars with 25,000 to 35,000 miles on them are often lease returns, corporate program cars or vehicles that have done duty in rental fleets. We feel pretty confident because they're newer and may still be under warranty. But how well have they been maintained? If you plan on owning a car for a long time, you'll keep up on the maintenance so that you can avoid expensive repairs down the road. But, if you know you're only going to have the car for two or three years, you may not be so committed to maintenance. It would be easy to think that skipping an oil change here and there wouldn't ruin a brand new engine. Then it'll be someone els ... read more
Posted on 12/1/2011
Here at Mackert Automotive, we have customers, like you, from all across the state who write to us with questions or feedback. One common question we're asked is: What is a differential and what does it do? You may have been told your differential needs service, or seen it as an option up on the service menu. Differential service covers a lot of things, so let's first talk about what a differential does. As you drive through a turn, your outside wheels and inside wheels turn at different speeds. Kind of like the cars going around a race track - the ones driving in the outside lanes have a greater distance to travel than the cars in the inside lanes. The differential is what allows the outside and inside drive wheels to rotate at slightly different speeds so that the tires don't hop or skip while taking corners, or lose traction in dirt or snow. Differentials have gears in them that transfer the power from the drive train to your wheels - which is why they're ... read more
Posted on 12/1/2011
When you hear the word ‘suspension‘, you may think back to those energetic days of grade school. Well, your car's suspension is actually a good thing because it keeps your car up off the road and helps provide a comfy ride. It needs to keep your wheels firmly planted over bumps and through curves. Your suspension system has many parts. If you look under your car, it's basically everything that connects your wheels to the car's frame. These are heavy duty parts that do a lot of work. They need to be inspected for damage and excessive wear at least once a year. A good time for this is when you get your annual alignment service. Here are some warning signs that your suspension may have problems: . . . You just don't feel in control when you're driving. Some suspension parts just wear out with use. Shocks and struts eventually lose their ability to control your ride. Wheel bearings need to be repacked every ... read more
Posted on 12/1/2011
Richard Petty once stated, "You've gotta have good brakes. If you've got good brakes you can keep yourself out of a lotta trouble." That's why a regular brake inspection is on every car's maintenance schedule. An inspection at Mackert Automotive will check your brake system and let you know if there are any problems. Of course, if you're having trouble with your brakes, get your car intoright away. Here are some symptoms to watch for: If you are experiencing any of these, it's time to get your brakes checked. There are two types of brakes: disc and drum. Disc brakes have a rotor that's attached to the axle. Calipers straddle the rotor, kind of like the brakes on a bicycle. Drum brakes are more common on back wheels. Both types have pads or shoes that press against the brakes and slow the vehicle. Brake pads and shoes are made out of very tough material to withstand the heat and force generated when stopping your car. Eventually, they wear out with use, and become too thin and need to ... read more
Posted on 12/1/2011
If you own a vehicle with a warranty, beware! Many dealers and manufacturers suggest that you need to get your maintenance services at a dealership in order to keep your warranty. That simply isn't true! You can have your vehicle serviced at your trusted, local service center without affecting your warranty. A federal law, called the Magnuson-Moss Warranty Act, prohibits a manufacturer from voiding your warranty just because you got parts or services from a non-dealer. In fact, a manufacturer can't require you to use their brand of oil filters, lubricant, or any other part in order to maintain your warranty protection. This protection is true for aftermarket extended warranties purchased on new or used vehicles. This protection also applies to leased vehicles. There are similar laws in Canada as well. If a manufacturer can prove that the replacement parts or service lead to a vehicle failure, they can void a portion of the warranty. Of course,uses quality parts ... read more