AUTONET TV

The Right Stuff (Choosing Replacement Parts)

Let's face it.  Vehicles are complicated machines, each having thousands of parts.  And since they're subjected to heat, cold, vibrations, bumps and much more, these parts wear out and need to be replaced. 

When your service advisor says you need a new part, you may have many options.  Let's say you need a new muffler.  One choice would be to get exactly the same part that was installed when the vehicle was manufactured.  The advantages are that it will perform the same way as the one it's replacing and will likely last about the same amount of time as the original.

Some mufflers are made by the same companies that supplied the automaker when your vehicle was new (they call that an OEM part—Original Equipment Manufacturer).  And often those are the same as the part you'd buy from a dealer. A reputable vehicle service facility will know which ones these are because they replace mufflers all the time and do their homework.

The good news is there are many different mufflers available from several manufacturers.  These are called aftermarket parts. Some of them may use different metals or a different construction technique. Some may sound a little sportier while some may make your engine perform better.  Your service advisor will discuss what your driving habits are and help choose the part that's best for you.

You may be able to get a part that's better than the one originally installed.  Here's an example.  A repair shop discovered one owner's vehicle had developed cracks and leaks in the hoses that attach to the heater core.  They were made of plastic, and heat and pressure had caused the originals to crack.  The service advisor recommended they replace it with an aftermarket part that was made of aluminum instead, one that was more durable than the original part.

Some aftermarket parts cost more, some cost about the same or less.  Depending on how and where you drive and what you want out of your vehicle, you can decide to buy more economical parts which might be the best fit for your needs.  Or you may decide to upgrade to a better, more expensive part.

Dennis Road Automotive
11155 Dennis Road
Dallas, TX 75229
9722411901

Why Timing Belt Maintenance Can Save Your Engine

One part of your vehicle you probably never think of is the timing belt.  It coordinates the rotation of the crankshaft (which converts the up and down motion of the pistons into rotation motion) and the camshaft (which opens and closes your engine’s valves). It’s vital that the timing of these movements happens precisely when it needs to so your engine will operate smoothly and perform the way it’s designed to.  It also prevents damage to the engine.
 
If your engine’s timing belt breaks, it can leave you stranded, plus cause costly, catastrophic damage to the engine.  Depending on your vehicle, a failed timing belt can wind up causing a collision between the pistons and the valves, and it’s possible it can destroy the cylinder head.  Repairs can be extremely expensive and, in some cases, your engine might not even be repairable.  And that is why maintaining your timing belt is extremely important.
 
Your vehicle’s manufacturer provides recommendations on when your timing belt should be replaced, often between 60,000-100,000 miles/95,000-160,000 km, or about every 5 to 7 years.  Depending on how you drive and in what conditions (such as extreme temperatures), your engine may need its timing belt checked more frequently.  The longer and harder your belt works, the more likely it will get brittle and crack.  When your vehicle is in for a timing belt replacement, your service manager will frequently recommend replacing other components as well, such as water pumps, pulleys and tensioners.

Regular timing belt maintenance will help you maintain your vehicle’s performance and may allow you to avoid expensive repairs later.  

Dennis Road Automotive
11155 Dennis Road
Dallas, TX 75229
9722411901

Start Me Up (Ignition Systems)

When you start up your gasoline engine car, you may not know that it's using the same ignition principles as it has for decades.  You have spark plugs that require enough power so a spark can jump across a gap at its tip.  Years ago, a vehicle's 12-volt system had to produce 15,000-25,000 volts to do that, so engineers came up with something called an ignition coil that bumps up the voltage. It also has to be done at just the right interval called timing.

The first systems had a distributor, a mechanical device with a rotating disc that switched the power to the ignition coil on and off.  That higher voltage then was sent to the spark plugs at the correct time interval. But the mechanical "points" had to be replaced and adjusted every 12,000 miles/20,000 kilometers.  Engineers later replaced the switching mechanism with solid state ones, but they still needed replacement after 120,000 miles/200,000 kilometers.

The next evolution came in the 80's when the distributor was replaced with a couple of sensors which talked to a computer.  This "DIS" (distributor-less automotive ignition system) was a big advance.  Plus, it didn't use just one ignition coil for all the cylinders.  It had coil "packs" that each provided spark to two cylinders.  That way, the voltage could be boosted even higher, to 30,000 volts, which helped engines be able to ignite a leaner fuel/air mixture.

Recently have come even more improvements.  Now instead of coil packs, there's a coil that's attached to each spark plug.  No more spark plug wires means less maintenance. Plus, a stronger, hotter spark of 50,000 volts can make an engine more reliable, increase fuel economy and reduce emissions.

No matter what ignition system your vehicle uses, your vehicle service facility has a staff of technicians trained to work on the latest technology.  Make sure to have your vehicle maintained regularly so you can take full advantage of these modern engineering marvels.

Dennis Road Automotive
11155 Dennis Road
Dallas, TX 75229
9722411901

Dennis Road Automotive Helps You Decipher the Menu Board: Part 2

TX service centers have a menu board that lists the services they provide. Some Dallas drivers may not be familiar with all of the items on the board so here is a quick description of some of the typical services that might be listed.

Dennis Road Automotive fuel system cleaning: Over time, the vehicle fuel system gets gum and varnish built up. A fuel system cleaning gets rid of that and cleans out the fuel injectors. Saves gas, by the way.

Dennis Road Automotive headlamp replacement: Halogen and standard headlamps gradually fade. It's usually good to change them every year or so.

Dennis Road Automotive inspections: Dallas drivers get inspections for many reasons. Maybe they're going on a trip or just want to make sure their vehicle's ready for a TX summer or winter. Maybe they just bought a used vehicle and want to give it the once over. An inspection may reveal some things that are broken or are getting close to having a problem.

Dennis Road Automotive oil change: There are several options: Some Dallas centers offer just an oil change and new filter as an option. Most will also check and top off all of your other fluids and do a quick visual inspection with a full service oil change. In my way of thinking, the full service option is best because it makes sure you have adequate fluids and may uncover an emerging problem. There may also be options for higher mileage fluids or an upgrade to synthetic oil.

Dennis Road Automotive PCV valve replacement in Dallas: PCV stands for Positive Crankcase Ventilation valve. It's a little part that releases pressure from the engine. It can get gummed up and that can lead to engine damage. It just needs to be changed now and then.

Dennis Road Automotive power steering service: Often overlooked. Your friendly and knowledgeable Dennis Road Automotive technician will evacuate the old fluid, clean out the system and replace it with clean fluid. Keeps the vehicle system running well for a long time.

Dennis Road Automotive serpentine belt service: That's the belt that powers the vehicle engine's accessories like the alternator, air conditioner, power steering and brakes. You'll want to replace the serpentine belt before it breaks, because that'll shut you down.

Dennis Road Automotive shocks and struts: This starts with an inspection of the suspension components. Shocks last a long time and wear out slowly, so many Dallas drivers don't notice when it's time to change them. If they're worn or leaking, they need to be replaced.

Dennis Road Automotive transmission service: This involves removing the transmission fluid and replacing it with clean fluid. It's like an oil change for your transmission.

Dennis Road Automotive tire rotation and wheel balancing: The tires are rotated from front to back using the recommended rotation pattern. This helps tires wear more evenly. Wheels need to be balanced from time to time to keep them turning without any wobble or bounce. Helps the ride and saves tire wear.

Dennis Road Automotive
11155 Dennis Road
Dallas, TX 75229
9722411901

No Charge (Why Won’t My Battery Hold a Charge?)

When your vehicle’s battery is dead, it leaves you with that horrible, helpless feeling.  A dead battery means it won’t hold a charge, and there are several reasons it won’t.

One is age.  Batteries have chemical and electrical systems in them that create power, and as time goes by, they won’t work well anymore.  They may have been degraded by exposure to extreme temperatures, both hot and cold. Batteries have a code on them that can tell you when they were manufactured.

Another reason your battery won’t hold a charge is corrosion on the terminals, the metal posts where your battery cables are connected.  A chemical reaction between the battery’s acid and air creates a salty moisture that can corrode those terminals.  

If your vehicle’s alternator is not working properly, it won’t charge your battery as it is designed to, and the battery may lose its charge more quickly than it should. Another possibility is there might be an electrical component that’s staying on when you turn your vehicle off, and it may slowly drain the battery so much that there won’t be enough power to start your vehicle.  

When you notice any of these things, bring your vehicle in so a technician can evaluate what’s causing the problems.  We will give your electrical system a thorough inspection and run tests that can tell the health of the battery and other components.  You may be able to avoid problems by having us evaluate your electrical system regularly as part of a periodic maintenance schedule.

Dennis Road Automotive
11155 Dennis Road
Dallas, TX 75229
9722411901