Thom's Four Wheel Drive

The biggest issue for CHICAGO area drivers is always safety. When your vehicle wheels are out of alignment, the vehicle will pull to one side, which could lead to an accident. When you're vehicle is out of alignment, you should have it taken care of right away at Thom's Four Wheel Drive in CHICAGO. When undergoing an alignment service at Thom's Four Wheel Drive, your vehicle is put on an alignment rack where the tires, steering and suspension parts are checked for damage. Then the alignment is charted and checked against the factory settings.Precision adjustments are made to bring the wheels back into alignment. This gets all four wheels going in exactly the same direction.CHICAGO drivers should be aware of the signs of alignment problems. These include the car pulling to one side. Also, the steering wheel may not be centered when you're going straight. If you see the edges of one or more tires rap ... read more

Most CHICAGO drivers are too young to remember life before power steering - cranking those great big steering wheels! It was a pretty good workout. Now power steering is standard. Let's look at how it works. The heart of any power steering system is its pump. The pump pressurizes the power steering fluid that provides assist for steering. Most pumps are driven by a belt that is run by the engine; a few are electrically powered. A high-pressure hose passes fluid from the pump to the steering gear. A low pressure hose returns the fluid back to the pump.These hoses can develop leaks, so it is a good idea for CHICAGO drivers to have them inspected at every oil change. Low fluid can damage the power steering pump. That is why power steering fluid level is on the checklist for a full-service oil change. The fluid needs to be compatible with the hoses and seals, so check your owner's manual for the right type - or just ask your friendly and knowledgeable pros ... read more

Today's report from Thom's Four Wheel Drive is on vehicle batteries, why they die and what we can do to lengthen their life. Most of us have had a dead battery at one time or another. In fact, it would be very unusual if you hadn't. You may be surprised to learn that only 30 percent of CHICAGO vehicle batteries last for 48 months.Now that's an average. How long a battery lasts depends on many factors. You may not know that one of the biggest factors is the temperature where you live and drive around in Illinois. You might suppose that cold weather was harder on batteries because it takes more power to crank a cold engine, but the opposite is actually true. For more information on your battery, please visit us:Thom's Four Wheel Drive4118 N PULASKI RDCHICAGO, Illinois 606417735775701 Batteries in very cold climates have a life expectancy of 51 months as opposed to 30 months in very warm climates. The reason is simple: batteries are ... read more

We usually take our vehicle's easy steering for granted until something goes wrong.  Power steering is what makes it almost effortless to turn the steering wheel, aiming your vehicle in the direction you want to go. Without the assistance of power from the engine, steering would be a laborious process, so you want to make sure the system is working well. Power steering systems are usually one of two types, hydraulic and electric.  The hydraulic type uses a pump that is driven by either a belt or an electric motor.  This system uses hydraulic fluid to create pressure that gives your steering the power assist.  Since that pump is always working, time and distance traveled eventually take their toll, and these systems need to be periodically inspected.  Also, while that hydraulic fluid can last for years, it should be replaced periodically as it degrades over time. Your vehicle's owner's manual contains the manufacturer's recommendations. A technician can check fo ... read more

The serpentine belt is aptly named since it snakes around under your hood. It may lack its namesake's fangs, but it sure packs a wallop when it breaks.The serpentine belt powers a lot of engine systems. It runs the alternator, which charges the battery; the water pump (on some vehicles), which cools the engine; the air conditioning, which cools the driver and passengers; and the power steering pump, which allows for easier steering. When the belt breaks, all of these systems shut down.Okay, so maybe you can live without air conditioning and power steering for a while, but your battery can't live very long without an alternator, and when the cooling system goes down, your vehicle engine will overheat. That's why CHICAGO drivers should never wait to get a serpentine belt replaced.Serpentine belts are fairly inexpensive at Thom's Four Wheel Drive in CHICAGO. And they look downright cheap when you compare them to the cost of an overheated vehicle engine, a tow truck, time lost on the road ... read more

Let's talk about something critical for all CHICAGO drivers: your brakes. Your vehicle is heavy, and it takes a lot of muscle to bring it and your passengers to a safe stop – so everything needs to be in good working order. Here's an explanation on how your disc brakes work: The wheel hub keeps your wheel attached to your vehicle. The brake disc – or rotor – is attached to the hub and rotates with the wheel as you drive around CHICAGO. Your brake pads clamp onto the rotor to slow the wheel.The brake caliper straddles the rotor and squeezes the rotor to slow it down. The calipers contain brake pads which press on the rotor when you put your foot on the brake. The brake piston causes the calipers to squeeze and release as you use your vehicle brakes.Your brake pads start to wear the first time you step on the brakes. Eventually the ... read more

A fuel injector is a valve that delivers fuel to a vehicle's engine. It has to deliver the precise amount of fuel to precisely the right place, precisely when the engine needs it. The fuel also has to be mixed with air before it can burn in the engine.Fuel injectors are engineered to spray fuel in a specific pattern into the engine. (The pattern varies by engine type and design.) In order to achieve these spray patterns, the fuel must be pressurized.The pressure in a fuel injection system varies depending on its type. Many gasoline engines use port injection systems, which operate with a pressure of 60 pounds per square inch. Newer direct injection systems operate at 10 to 30 times that pressure. Some diesel passenger vehicles have fuel injectors that operate at 30,000 pounds or more per square inch.Vehicles have one fuel injector for each cylinder in the engine. Your vehicle's control computer constantly monitors the engine and various sensors in the vehicle.  It ... read more

Have you ever thought about all the little things we do to keep our lives running smoothly - like vacuuming? It makes a room feel fresher and more comfortable. We may not consider that we're also prolonging the life of the carpet by keeping it clean. But CHICAGO drivers don't always extend those good habits into the garage. Our vehicles need regular maintenance just like our rugs need vacuuming. We may not notice a difference in the feel or appearance of the vehicle, but just as cleaning a carpet carries the hidden reward of prolonging its life, maintaining our vehicles incurs a hidden reward that becomes noticeable at CHICAGO gas stations.When it comes to reduced fuel economy, there are two culprits: increased friction and inefficient fuel combustion. That means that anything CHICAGO drivers can do to decrease friction and increase the efficiency of their engines will translate to savings on fuel. Friction increases the amount of energy it takes to move something. So if we can reduce ... read more

Your car might have an alignment problem if: it drifts or pulls to one side, your steering wheel is off center, you have uneven tire wear or your car doesn't feel like it handles right. When all of a vehicle's wheels are lined up exactly with each other, your wheels are in alignment. Running into potholes around CHICAGO and smacking a curb or other object are great ways to knock your car out of alignment. Then, one or more of your wheels starts pulling in a slightly different direction and the problems begin.There are several things involved in an alignment check at Thom's Four Wheel Drive. First, there's an inspection of the steering and suspension systems - their components should be checked to see if anything's bent or broken. Then the tire condition needs to be inspected. From there, the vehicle is put on an alignment rack and an initial alignment reading is taken. If all four wheels are adjustable, they are lined up perfectly parallel with the vehicle's center line. If t ... read more

So your vehicle won't start.  What's the first thing that comes to mind?  Battery dead? Starter motor worn out? Out of gas?  Well, those are all reasons that make sense.  But your vehicle may be refusing to start because one of its computers is being warned that to do so might damage it.  Here's how that works. You have lots of computers in your vehicle.  They need to know the status of things so there are several sensors monitoring various things going on.  These sensors send information to the computers that adjust the fuel and air mixture so you don't waste fuel.  They know when things aren't quite right and prevent you from starting your engine if that's going to damage it.  Other sensors make sure the coolant is the right temperature, check to see you are not polluting the air and make sure other electronic components are performing their tasks correctly. Here's an example of a sensor doing its job.  Your engine needs oil to lubric ... read more