AUTONET TV

Go with the Flow (MAF Sensor Replacement)

If your vehicle has an internal combustion engine, it depends on two things to make propulsion power for you to be able to motor on down the road: fuel and air.  The engine mixes the two in just the right proportion so that they can be ignited, creating a series of tiny explosions that are coordinated in such a way that your vehicle moves steadily ahead.

One of the key parts to making sure that mixture of air and fuel is correct is a little tube that measures the amount of air that’s coming into the engine.  It’s called a Mass Air Flow sensor, or MAF sensor.  There are two wires in this tube, one of which is heated up with electricity and the other isn’t.  When the air flows over the heated wire, it cools.  When the temperature of the two sensing wires is different, the MAF sensor either increases or decreases the current to the heated wire to try to make it the same as the other wire. That’s sent to a small computer that tells the engine to change the amount of air going into the engine.

Some signs of an MAF sensor problem?  Your vehicle doesn’t have as much power as it used to, or your fuel economy might drop.  Your vehicle may not start,   and the Check Engine light may come on.

If you spot these signs, it’s important to bring your vehicle in so we can check things out.  At the same time a technician looks at the MAF sensor, they’ll also check the connector that runs to the engine’s computer and replace it if necessary. They’ll also inspect other parts of the system, such as hoses, for problems.  

By the way, one way to minimized MAF sensor problems is make sure your vehicle’s engine air filter is regularly changed. That can help you be sure that the air that gets to your vehicle’s engine is clean.

Darrell's Firestone
23534 Farmington Rd
Farmington, MI 48336
248-477-9090
http://www.darrellsfirestone.net

Time for a Brake (Brake Pad Replacement)

Stop! It's one of those things your vehicle has to do consistently and reliably.  That's why brake maintenance is vitally important, worthwhile for you to make sure stays up to date.

A brake system has many components. If your vehicle has disc brakes, they have pads that make contact with the rotors (the metal discs).  Those pads usually have a metal back, and the part that presses against the discs is made of a material which provides friction to stop the vehicle. Because of that friction, the pads are expected to wear down and eventually the rotors will, too.  But the pads usually are the part that will need to be replaced more often. But how do you know when it's time?

There are several signs, one of which is when your brakes squeak or make a high-pitched sound when you step on the brake pedal.  Many newer vehicles also have sensors on the brake pads.  When the pads get worn down to a certain point, the sensor will tell the vehicle's computer to turn on a light on the instrument panel.  When that light comes on, it's time to have your service facility check out what's going on.  If you don't know what that light looks like, ask your service advisor or look it up in the owner's manual.

Some vehicles also give you a reminder based on the distance you've traveled. It may be a message that displays on the dash or a light that illuminates. 

Your best bet is to have your vehicle regularly serviced at one shop you trust.  They will keep a record of your brake maintenance Then, when you take your vehicle in for oil changes or other routine things, they'll check your brakes for wear.  Sometimes you'll only need pads, but you may also need rotors or other parts replaced.  Oh, and you need pads replaced in pairs. That way stopping power will be equal on both sides and your vehicle won't pull in one direction. 

Brakes make up a key part of your vehicle's safety systems.  Keep them in good shape and they'll be able to stop your vehicle when you press down that pedal.

Darrell's Firestone
23534 Farmington Rd
Farmington, MI 48336
248-477-9090
http://www.darrellsfirestone.net

Putting a Stop to Brake Problems (Brake Service)

It's safe to say that most drivers take their brakes for granted.  You press on the brake pedal and the vehicle slows down or stops.  It's easy to see why it is so important for your vehicle's brakes to be working correctly.  Brakes are an important safety feature of any vehicle.

When it comes to your brakes working correctly, maintaining them regularly will ensure that you will always be able to slow or stop your vehicle in any situation, whether on a sunny day on dry pavement or a bad weather day on slippery surfaces.  And that is why regular brake service is such a sound investment for all drivers. The combo of brakes" and "surprises" doesn't usually end well.

You might already know about some of the parts of your braking system.  Terms familiar to you might be pads, rotors, and calipers. In short, the calipers press the pads, which in turn contact the rotors.  The resulting friction slows your vehicle.  Another type of brake uses a drum and brake shoes.  But both count on friction to work.

When you come in to have us check your brakes, we'll make sure those parts are all in good working together and meet the specifications of your vehicle manufacturer.  But there are other important components as well.  Your brake system has several parts of a hydraulic system that uses fluids to conduct the pressure you put on the brake pedal to the brakes on all of your wheels.  There are hoses and lines that can sometimes degrade because of road salt or debris.  

Last and not least, your vehicle has an emergency or parking brake. It's something you'll need to prevent your vehicle from rolling when you park on a steep incline. Your parking brake also is an important backup if your hydraulic brakes fail.  

Give your brakes some tender loving care with regular service and they'll be there when you need them.

Darrell's Firestone
23534 Farmington Rd
Farmington, MI 48336
248-477-9090
http://www.darrellsfirestone.net

Clean Slate (Protecting Vehicle's Finish)

Winter is one of the hardest times to keep your vehicle clean. But did you know neglecting to wash your vehicle in winter could cost you a significant amount of money in the long run? Here's why.

Many areas deal with snow and ice in the winter, and the salt and sand that are used to keep the road surfaces from being slick are also super corrosive to a vehicle's metal body and undercarriage.  That includes all the parts underneath that can be splashed with brine, saltwater and other road debris.  Winter is also tough on vehicles where there isn’t snow, sometimes from ocean salt or winter's extra humidity and rain. 

If you have any breaks in your vehicle's paint, whether it be from a little fender bender or a stone chip, that corrosive winter moisture can get through those cracks and start eating away at the metal underneath. 

If you can, you should get any dents or damage fixed as soon as possible so your vehicle has a protective layer of paint between road chemicals and the metal.  You may want to wait until the warmer weather, but while you're waiting, the damage is getting worse.  If you're not sure of a reputable body repair shop, check with the service advisor where you have mechanical work done.  They're usually knowledgeable about who is good and not so good. 

You also may be tempted to skip the car wash during the winter since your vehicle is just going to get dirty fast anyway.  You may want to reconsider.  Many winter road treatments now use brine that gets in every nook and cranny of your vehicle.  It's wise to clean that off regularly during the winter, and many washing facilities include a spray underneath that gets rid of that salt.  Your vehicle repair facility may even have its own car wash, a nice bonus when you take your vehicle in for repair or regular maintenance. 

Darrell's Firestone
23534 Farmington Rd
Farmington, MI 48336
248-477-9090
http://www.darrellsfirestone.net

Feeling Powerless (Why Is My Battery Light On?)

When one of your vehicle’s warning lights comes on, the first thing that comes to mind is, “Oh, no, what’s wrong now?” When it’s the battery light, it means there’s something wrong with your vehicle’s battery or charging system.  And because both are important for your vehicle to work properly, it’s a good idea to get it checked out.  Here are some things that may cause a battery light to illuminate.

It could be that your battery has failed.  It could be on its last legs or completely dead.  When it isn’t showing it has the voltage it should, your vehicle lets you know.

If it’s not the battery itself, it could be the system that charges it.  The alternator is part of that system and could have a problem.  It could be putting out no power, too little power, or too much.  The alternator may not be working because the belt that drives it (using the engine’s mechanical power) could be broken or slipping.  Or the alternator pulley may be broken.

The alternator needs to have a solid connection to the battery, and sometimes the posts that connect to the battery cables get so corroded, they can’t conduct enough electricity. Or it could be that a battery cable isn’t conducting power properly. 

Because the alternator supplies power to other parts of your vehicle, if it gets overloaded, it will also cause your battery light to come on.  Other possibilities are an electrical short in the charging system or a failed voltage regulator.

Your vehicle may be hard to start or it may not start at all if you have any of these problems. It’s important to bring it in to us so we can diagnose and repair the problem before you wind up stranded… and feeling really powerless.  

Darrell's Firestone
23534 Farmington Rd
Farmington, MI 48336
248-477-9090
http://www.darrellsfirestone.net