Posted on Sunday 30 April 2023
Ever wonder how your vehicle’s transmission is connected to your wheels? After all, when you hit a pothole or some other uneven part of a road’s surface, there has to be something that can maintain the connection between the transmission and the wheel yet keep everything moving at the same speed. That very cool device is called a CV joint, a kind of driveshaft running to each wheel. The CV stands for constant velocity because it keeps the drive wheels moving at a constant speed (velocity). They’re used mostly on front-wheel drive vehicles but also in rear-wheel and all-wheel drive vehicles. The joints move up and down and adjust to bumpy surfaces. Plus, they are covered in a rubber boot which protects them from road debris and also holds lubrication in. There’s a CV joint and boot on the transmission side and one on the wheel side. Unfortunately, the spot that usually fails first is that rubber protective cover (the boot).&nbs ... read more
Posted on Sunday 26 March 2023
A driver brought her vehicle into the shop the other day and told us how she was getting lousy fuel economy and that the engine was running rough. Plus, the Check Engine light was on. Our technician checked the code the engine had generated (why the Check Engine light was on) and found the problem. It was a faulty Mass Air Flow sensor, MAF sensor for short. This MAF sensor is an important part of your vehicle. What it does is calculate the amount of air going into your engine. As you may know, air is taken into your engine where it's mixed with fuel. Then, the spark plugs fire, that explosive fuel/air mixture detonates, and all these sequential explosions together provide the power to get your vehicle moving down the road. It makes sense that if the MAF sensor isn't sending the engine's computers the correct information on the amount of air going in the engine, the fuel/air mixture isn't going to be right. It will either too rich (too much gaso ... read more
Posted on Sunday 19 March 2023
You may live in a region where roads become pockmarked with craters known better as potholes. They're caused by moisture seeping through a compromised road surface that can freeze, expand and literally punch holes in the road. And when your vehicle hits one of those holes that's big enough, the impact can flatten a tire, bend a wheel or tear apart a suspension component. To minimize pothole damage, leave enough room between you and the vehicle in front of you so you can see the road surface and any upcoming potholes. That way you'll have time to slow down and steer around them. Also, if you see what looks like a puddle of water, it may be hiding a pothole underneath, so treat it as if was a pothole. If you keep your tires inflated to the manufacturer's specifications, they're more likely to withstand hard impacts. And the slower you're going when you hit a pothole, the less likely you are to break something. But if you do find you've hit ... read more
Posted on Sunday 18 December 2022
It's bad enough in cold weather when ice and snow block your visibility. Add to that fog on the inside of your windows and you could be driving blind. So here are a few tips on how to keep your windows from fogging up when there's a chill in the air. You probably know fog is really condensation, when moist, warm air meets a cold surface and turns to liquid. If your windshield fogs up, you probably turn on your windshield defroster. Most defrosters blow heated air on the windshield glass to warm it up so it won't condense the moisture. Many also turn on the air conditioning to reduce the moisture. That same strategy can work on the rest of the windows. First, turn up your heater's temperature setting. The hotter the air, the more moisture it will hold. Also, turn off the "recirculating" setting since you want all outside air to come in. Then switch on the air conditioning. It will remove the moisture from the outside air that i ... read more
Posted on Sunday 25 September 2022
Your vehicle is a complicated machine, and yes, it would be nice if you could take care of all of its problems yourself. There was a time when vehicles were simpler and it wasn't too hard for a weekend mechanic to replace brakes, adjust a carburetor or perform a tune-up. But vehicles are far more complicated these days, with traction and stability control, anti-lock brakes, air bags and fuel injection just a small sample of the new technologies. Like a lot of things these days, technology changes in leaps and bounds. Anyone who repairs vehicles has to stay up on the latest computers, sensors, suspensions, steering, electronics, hydraulics and more. Many power steering, braking and heating and air conditioning systems that used to be mechanical are now being replaced by electronic systems. Computers are an integral part of much of the latest automotive technology, something you didn't see a lot of until as recently as the 1990s. Today's most hig ... read more
Posted on Sunday 04 September 2022
So you thought you only had two brake lights. Look again and you'll see one in the center at a higher level than the two on either side of the vehicle. They're sometimes in the inside of the vehicle behind the back window, or they could be in the deck lid, on the roof or on the spare wheel carrier, But why is that third brake on your vehicle? Experts say it helps prevent rear end collisions. Tests done by installing the third brake light in taxis and fleet vehicles showed fewer rear end crashes in the ones that had the extra light. The third brake light was mandated in new passenger cars in 1986 in the US and Canada. The requirement was added to new light trucks and vans in 1994. Sometimes it's difficult to know if your third brake light is even working. Many vehicles have bulb warning systems that alert you to non-functional bulbs, but not all do. Your vehicle service facility will often check to see if all your turn signals, taillights and headlights are worki ... read more
Posted on Sunday 14 August 2022
You know how heavy your engine and transmission are, so you can imagine how tough the parts that hold them onto your vehicle's sub-frame must be. Not only must they support the weight, they also have to isolate vibrations and noise from the passenger cabin. Pretty tall order, wouldn't you say? The parts that face that task daily are called the motor mounts, or engine mounts. They are usually made of rubber with steel brackets. Others contain a liquid for vibration and sound isolation. Most vehicles have three or four motor mounts, and while rubber or hydraulic liquids do a good job of damping the vibrations from the engine, they also have their limitations. The problem with rubber is that it gets old and brittle. Plus, if there's an oil leak anywhere in your engine and oil gets on the rubber motor mounts, rubber will deteriorate even more quickly. As for the liquid motor mounts, they can develop leaks and stop working. Here are sign ... read more
Posted on Sunday 10 July 2022
Your vehicle may be wearing boots right now and you might not even know it. They're called ball joint boots. They're actually protective, flexible things that protect parts of your suspension (called ball joints) from all the hazards the road can fling at them. If one of those ball joint boots fails and you don't get it replaced, the ball joints themselves could wind up failing, a repair that can be even more expensive. Ball joint boots not only keep things like rocks, salt, water and dirt out of your ball joints, they also help the ball joints keep their lubrication inside and working properly. To do that, the boots have to be made of a flexible material, sometimes rubber, sometimes a synthetic. They do take a beating, exposed to temperature extremes and debris, and eventually they can tear or crack just because of their age. Unless someone is keeping an eye on your ball joint boots, you may never know there's a problem. That's why when ... read more
Posted on Sunday 05 June 2022
A technician was telling us the other day that he was servicing an engine and spotted something he'd never seen before: A collection of dry dog food siting on a horizontal metal ledge near the base of the engine. It was neatly stashed and was in a spot where the food pellets couldn't have simply fallen down in there. Even though it's the first time he'd seen dog food in an engine, he immediately knew what was going on. Critters like mice or chipmunks had found the dog food somewhere nearby and had used the engine as a nice storage unit. Mice, squirrels, chipmunks—you name it—like the heat of the engine. And they'll use that to store up supplies of food for use in cold weather when outside food supplies are scarce. The problem is they'll also chew on engine components while they're there. And they can do a lot of damage if they start gnawing on the wires. Depending on how much of your electrical system needs to be replaced, repairs can mou ... read more
Posted on Sunday 08 May 2022
If someone asked you what gas made up the largest portion of the atmosphere, what would you guess? Well, it's not oxygen; it only makes up 20.9 percent. But since we're talking about oxygen, you should know that your vehicle uses oxygen sensors to make sure your engine is running the way it should. The oxygen sensors measure how much oxygen is in your exhaust. If there's too much, it means there's a problem with the mixture of fuel and air. The sensor sends signals to computers in your engine and adjusts the mixture so it maximizes performance and efficiency. It does this constantly. Many vehicles have multiple oxygen sensors. Some have one close to the engine, another close to the muffler. Two measurements are better than one since they allow readings to be more accurate. You may have a vehicle with a dual exhaust, so you'd have twice as many oxygen sensors. Your oxygen sensors can fail. One thing that can damage them is contaminat ... read more