AUTONET TV

Tacky or Techie? The Tachometer.

There's a gauge that many vehicles have that says RPM on it.  And there are a lot of people who either don't pay any attention to it or don't even know what it is. Here's why it's a good gauge to know about.

It's called a tachometer, and that "RPM" label means it is measuring how many revolutions per minute (RPM) the engine is turning.  Automotive experts know that a vehicle's engine can be damaged if it turns too fast (revving too high) or too slowly ("lugging" the engine).

A tachometer (sometimes called a tach) is almost a "must-have" gauge for vehicles with a manual transmission; the driver has to manually change gears; the tach helps the driver know when revolutions are in the optimal range.

Some say you don't need a tachometer if you drive a vehicle with an automatic transmission. It's true that most drivers of automatics don't even look at it.  But there are times when paying attention to the tach can help you prevent an expensive repair.

Here's a good example.  Manufacturers now build many of their automatic transmission vehicles with shift paddles.  They let you shift gears without a clutch. That's manual shifting, and drivers need to know they're not revving the engine too high. That's where the tachometer comes in, since it shows you visually when you are in the red zone (RPM too high).

Here's another way the tach can help you: fuel economy. Generally speaking, the lower the RPM, the better the fuel economy. It's not good to go too low, of course, and the tachometer will help you find that spot of maximum efficiency.

You can also spot problems by paying attention to the tach.  When your vehicle stays in first gear longer than usual (higher reading on the tach), then the RPM dip lower than usual after shifting, it may be that your vehicle's transmission is skipping a gear.  Plus, if your vehicle's RPM go up but your speed doesn't, it could mean your transmission is slipping.  Either situation should be checked by a trained technician.

If your commute takes you down some long grades, you might like to put your vehicle in a lower gear to help slow down the car (and not burn up the brakes). Having a tachometer keeps tabs on when your engine is revving too high.

So, consider the tachometer a "bonus" gauge.  It's one more helpful assistant that can help you spot and prevent problems in your vehicle.

Combustion Choreography: Timing Belt Replacement at Arizona Auto and Radiator Repair in Sierra Vista

Have you ever seen a ballet performance? Have you wondered how all of those dancers manage to travel all over the stage jumping and twirling and never crash into each other? That's the job of a choreographer.

Our auto engines are also highly choreographed. Pistons travel up and down inside cylinders. Valves at the tops of the cylinders open to let air and fuel in or exhaust out. These valves have to open and close at precisely the right time or the engine will run poorly if at all. The movement of the valves and pistons must be in harmony with each other. This choreography is the job of the timing belt or timing chain.

Timing belts, or chains, rotate the shafts that control the opening and closing of the valves. Timing chains are metal and durable enough that they may never need to be replaced.

Most vehicles, however, use a timing belt. Timing belts are tough and flexible, and considering the work they do, they last a long time for Sierra Vista auto owners . But they do wear out. If they break, the consequences for Sierra Vista drivers can spell disaster.

No matter what kind of engine you have, a broken timing belt will cause the engine to shut down or will lead to major engine damage. But in some engines, the valves protrude down into the cylinders enough that if the timing belt breaks, the pistons can smash the valves, bending or breaking them. If the engine is spinning fast enough, the broken parts can then shred the cylinder head. This adds to thousands of dollars of engine damage.

The only way the damage can be avoided by Sierra Vista auto owners is by replacing the timing belt on schedule. Most vehicle manufacturers recommend replacing the timing belt at 60,000 miles (100,000 kilometers), but others can go as long as 90,000 or 100,000 miles (145,000 to 160,000 kilometers). Check the schedule for preventive maintenance in your owner's manual. If you're due or overdue for a timing belt replacement, don't put it off. Get it done now at Arizona Auto and Radiator Repair in Sierra Vista.

Your friendly and knowledgeable Arizona Auto and Radiator Repair technicians probably aren't great dancers, but they can offer you some great auto advice on how to keep your engine properly choreographed. Don't hesitate to consult them about replacing your timing belt or any other car care concerns you may have.

Arizona Auto and Radiator Repair
1255 E FRY BLVD
Sierra Vista, AZ 85635
520-459-2216
http://www.azautorepair.net

Arizona Auto and Radiator Repair Advice: Don't Overlook These 10 Automotive Services

Organization is the key to managing a busy life in AZ. So setting up an annual calendar for vehicle care can keep Sierra Vista residents on top of preventive maintenance. But you can't just write “oil change” every few months on the calendar. Modern vehicles have many systems that are vital to the safe operation of a vehicle, and they all need to be inspected. Sierra Vista residents can't afford to overlook any of them.

The following is a list of preventive maintenance services that are often overlooked by vehicle owners in the Sierra Vista area. They are not presented in any particular order.

1. Arizona Auto and Radiator Repair Power Steering Service. Moisture gradually builds up in your power steering fluid, which can lead to corrosion in your steering system. The fluid also gets dirty, which can gum up your steering system. The fluid needs to be replaced periodically.

2. Arizona Auto and Radiator Repair Wheel Alignment. Wheels that are out of alignment will cause a vehicle to pull to one side. This is dangerous for Sierra Vista residents and can lead to accidents. Also, it causes uneven and rapid tire wear, which means tires must be replaced more often.

3. Arizona Auto and Radiator Repair Differential Service. They are part of the drive train system that transfers power from the engine to the wheels. Damage or wear in this system can make a vehicle undriveable.

4. Arizona Auto and Radiator Repair Cabin Air Filter. Your vehicle may or may not be equipped with a cabin air filter. Its job is to remove dust and pollen from the air that enters the passenger compartment of the vehicle. If this filter clogs, it can stink. So check your owner's manual to find out if your vehicle has a cabin air filter. If so, come visit us at Arizona Auto and Radiator Repair and get it changed according to the recommended schedule.

5. Arizona Auto and Radiator Repair Timing Belt Replacement. Most passenger cars and some vans and trucks have timing belts. Sierra Vista residents can check their owner's manual to find out if their vehicle has one. If so, you can't drive without it. And if it breaks while on the road, you may be looking at thousands of dollars of repairs. So it is important to inspect it occasionally. If your vehicle has close to 60,000 miles/100,000 kilometers or more on it and you haven't had your timing belt replaced, then you need to find out the recommended replacement interval NOW.

6. Arizona Auto and Radiator Repair Transmission Service. Transmission fluid gets dirty and has to be replaced. If not, you risk repairs.

7. Arizona Auto and Radiator Repair Air Conditioning Service. The refrigerant in your air conditioner needs to be replaced periodically. This fluid doesn't just refrigerate air; it provides lubrication to the air conditioning system and conditions seals. Lack of fluid can damage components.

8. Arizona Auto and Radiator Repair Brake Service. Even if your brakes are quiet and working well, the brake fluid still might need to be changed. Over time, moisture builds up in brake fluid. Water has a different viscosity than brake fluid, so the brakes can't compress properly when there's too much moisture in the fluid — and you shouldn't need to be told how it is to drive with brakes that are compromised. Moisture in your brake fluid can also corrode parts in your brake system, causing it to fail altogether.

9. Arizona Auto and Radiator Repair Coolant System Service. Antifreeze is another fluid that needs to be changed regularly. If not, it actually becomes corrosive and begins to damage your cooling system. Eventually it can eat holes in your radiator.

10. Arizona Auto and Radiator Repair Fuel System Cleaning. Over time, your fuel system just gets gummed up, which can interfere with the flow of fuel in a number of ways.

Of course, your next question should be: How often do I need to get all of this done? Well, the answer varies depending on which service we're talking about, the make and model of your vehicle, the climate where you live in AZ, your usual driving conditions and your driving habits.

But don't lose heart. Your owner's manual will give you a recommended service schedule for most of the service items listed. And you can get quality auto advice from your friendly and knowledgeable Arizona Auto and Radiator Repair service advisors to help you meet the service intervals that suit your vehicle.

Arizona Auto and Radiator Repair
1255 E FRY BLVD
Sierra Vista, AZ 85635
520-459-2216
http://www.azautorepair.net