Fredericksburg Auto Repair

Articles:

A LOOK AT THE VARIABLES

With the goal of better fuel mileage, auto manufacturers are introducing more autos with “continuously variable transmissions” (CVTs). In contrast to an automatic transmission, which has a set number of gear ratios, CVTs generally utilize a pair of variable diameter pulleys (shaped like a pair of opposing cones) with a chain or metal belt running between them. With one pulley connected to the engine and the other connected to the drivewheels, the changing diameters of the movable pulleys seamlessly vary the transmission’s ratio. Cars utilizing CVTs make less noise, as the CVT raises and lowers engine speed as needed. However, it is important to note that CVTs require special transmission fluids, and nothing else should ever be used. There are a variety of transmission fluids. Refer to your vehicle’s owner’s manual to determine which fluid is best. One of our ASE Certified Technicians can inspect your vehicle’s transmission fluid, engine oil, and filters. HINT: While the belts used on some c ... read more

DIRECT INJECTION PROBLEMS

In recent years, auto manufacturers have been introducing gasoline direct injection (GDI) systems paired with turbo-charging, which enables them to downsize engines and increase fuel economy without sacrificing performance. While most fuel-injected engines use indirect fuel injection that premixes the fuel and air in the intake manifold, direct injection also has air flowing into the cylinder from the intake manifold, but the fuel is sprayed into the cylinder separately. As beneficial as GDI systems are, they are showing drivability issues related to carbon buildup on the intake valves, which results in hard starting and random misfire codes. This is caused by fuel’s failure to spray on the backside of the valves, where the detergents can work to remove deposit buildup. Get the maximum reliability and safety from the car you rely on daily by inspecting parts routinely and replacing them before they fail. We will treat you like a friend and your car like it was one of our own. One of our AS ... read more

LIGHT DUTY

When it comes to changing light bulbs in your vehicle, the headlights, taillights, stop lights, turn signals, and backup lights probably come most immediately to mind. If these lights do not illuminate properly, safety is compromised for the vehicle’s driver and passengers in addition to everyone else on the road. These lights should be fixed immediately. Beyond those bulbs, there area variety of light bulbs in and around the vehicle that also require attention, preferably before they burn out. The five most commonly neglected bulbs of this type are the license plate light, the rear highmount stop light, the dome bulb light, and the fog light. Failure of the first two of these lights may get you a ticket. It is important to ensure that lights are in perfect working order for your safety as well as your wallet’s by avoiding costly tickets. HINT: Auto technicians often apply a very light coating of dielectric grease to the contacts of bulbs placed in exterior sockets to prevent corrosi ... read more

12
If You Are Using A Screen Reader And Are Having Problems Using This Website, please call Express Auto Service (540) 372-4422 For Assistance.