AUTONET TV

Rotation Explanation (Tire Rotation Patterns)

You may notice that when you get your vehicle's oil changed, your service adviser may recommend that you have your tires rotated at the same time.  The reasons are simple.  That will allow your tires to wear more evenly and reduce the noise your tires make as you drive down the road.

There are different ways of rotating tires. If your vehicle has non-directional tires and the same size wheels at each corner, here are the different rotation patterns.

For all-wheel drive and rear-wheel drive vehicles, one is called the rearward cross pattern.  The rear tires are moved to the front and stay on the same side of the vehicle, and the front tires are moved to the rear on the side opposite of where they were on the front. 

For all-wheel and four-wheel drive vehicles, use the X pattern.  The rear tires are moved to the front on the opposite side of the vehicle, and the fronts are moved to the rear on the opposite side of where they were on the front.

For front-wheel drive, there's the forward cross.  The front tires are moved to the rear wheels on the same side of the vehicle as they were on the front and the rear tires are moved to the opposite side of the vehicle than they were on the rear. 

If you have directional tires (they only can be mounted in one direction) and the same size directional wheels, the rear tires are moved to the front on the same side of the vehicle where they were, and the front tires are moved to the rear on the same side they were on the front.   And if you have tires with different sizes of non-directional tires and wheels on the front and rear, rotation will be from one side of the vehicle to the other. 

If you have a spare, it's put into the rotation using a forward cross or rearward cross. 

Yep, that's a lot to keep straight.  So, we suggest letting your service advisor recommend the right rotation pattern for you at the interval your vehicle's manufacturer specifies.

Joe D'Auria's Auto
1401 BRACE RD
CHERRY HILL, NJ 08034
(56.427.9422
http://www.autorepaircherryhill.com

Giving CV Joints the Boot! (CV Joint and Boot Replacement)

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).  After a lot of wear, tear, bumps, road hazards, heat, and you name it, the rubber rips and the lubrication leaks out.  At that point, it must be replaced. 

Here are signs to tell if your CV joint is bad.

• Your vehicle is pulling to one side as a wheel loses power or you feel a vibration while driving.
• You see grease on the inside or edge of your tires.  
• Your front tires won’t point in the same direction.
• You hear grinding or clicking when you turn.

Sometimes if a broken boot early is caught early, a technician can pack in new grease and replace just the boot.  But if the lubrication has leaked out and the joint is already wearing badly, the CV and boot both have to be replaced.  Give your vehicle the boot (as in a new boot) and CV joint, and you’ll be back on the road to your next destination.

Joe D'Auria's Auto
1401 BRACE RD
CHERRY HILL, NJ 08034
(56.427.9422
http://www.autorepaircherryhill.com

What Is an EGR Valve? (EGR Valve Service)

If you've ever felt your vehicle hesitate, go, then hesitate again, you might think there's something wrong with the transmission.  After all, it's not moving smoothly  down the road.  But there are plenty of malfunctions that can cause those symptoms, one of them being something you may have never heard of: the EGR valve.

EGR stands for Exhaust Gas Recirculation. It's a system that channels small amounts of exhaust back into the engine to cool down the cylinders and reduce polluting gases.  Those include nitrogen oxides that can cause smog. The EGR valve regulates how much of the vehicle's exhaust gas is recirculated. After years and long distances traveled, that valve can get clogged or fail. Sometimes the EGR valve can stick open.  When the EGR valve isn't working properly, your vehicle can start releasing those nitrogen oxides and pollute the air.

The symptoms of a malfunctioning EGR valve include:

• Engine losing power
• Engine idling roughly
• Pinging and knocking sounds in the engine
• Stalling and hesitation
• Fuel economy decreasing
• Check Engine light illuminated

Depending on its condition, the EGR valve can be cleaned or it may need to be replaced.  Consult with your service advisor to see what options are recommended to you.

The EGR system is part of your vehicle's pollution and emissions control equipment. If you care about keeping our planet's atmosphere clean, you'll want to make sure it's doing its job—for everyone's benefit.

Joe D'Auria's Auto
1401 BRACE RD
CHERRY HILL, NJ 08034
(56.427.9422
http://www.autorepaircherryhill.com

Singing a Different Tune (Up) (Tune Ups)

Engines required a lot more maintenance in earlier times.  You'd have to have your spark plugs, wires, rotors, caps, distributor points, fuel and air filters changed periodically.  There were mechanical adjustments of a vehicle's timing, dwell, spark gap and idle mixture, too. Unless you like to tinker with old cars, a lot of those terms won't mean much to you. 

That service was called a "tune up" back then, and you can see why.  But now, computers have reduced the number of maintenance items, and a tune up is a whole lot different than it used to be.  In fact, in some vehicle service facilities, that term is also a thing of the past. 

A tune up of today would more accurately be called simply periodic maintenance. Now, most vehicles still have spark plugs and wires, fuel filters, air filters and PCV valves, and they should be inspected tested and/or replaced at regular intervals.  Your vehicle's manufacturer has made recommendations on how often that should be. But it depends on your driving habits. Do you regularly tow a trailer? Do you drive on dusty roads often? Are you driving mostly stop and go in the city?  Depending on your answers, to those maintenance intervals might have to be more frequent.

Your service advisor will likely remind you about those "must check" items such as spark plugs and wires, air filter and oxygen sensor.  And now that the old-fashioned tune ups don't require you to take your vehicle in for maintenance as often, you can get the same benefit from scheduled oil changes or tire rotations.  When your vehicle is in for those, a technician can keep an eye on your other systems (fuel, emissions, ignition) to make sure they are operating correctly.

One thing to remember.  When you take your vehicle in for regular service or a specific issue, don't ever hesitate to ask you service advisor to explain what's being done and why.  Hey, "In Sync" may have been a boy band of an earlier era, but it's always good for you and your service advisor to be "in sync" when it comes to what maintenance is good for your vehicle.

Joe D'Auria's Auto
1401 BRACE RD
CHERRY HILL, NJ 08034
(56.427.9422
http://www.autorepaircherryhill.com