AUTONET TV

Fuel Saving Tip: Auto Myths Around Venice

With high fuel prices in Venice, FL, comes lots of gas saving advice. Some of it, like what you hear on   is great.  When you get one of those e-mails that's going around telling you how to save gas, try to think it through.

Does it really make sense? Does it defy the laws of physics?

Do some research on the internet or ask your Venice, FL, service advisor at Car Doc On The Island.

There aren't any magic pills you can drop in your gas tank, and the government hasn't suppressed a device you can clamp on your fuel line to make your vehicle run on air. Not even in Venice!

So next time you get one of those e-mails, check it out with an automotive professional. You'll get more bang for your buck with an oil change or an engine air filter replacement.

We're here for you at Car Doc On The Island, so give us a call at (941) 786-1595 for good honest advice about your vehicle.

Car Doc On The Island
419 South Tamiami Trail
Venice, FL 34285
(941) 786-1595
www.cardocontheisland.com

How Your Check Engine Light Works

Have you ever had an experience like this in Venice, FL? You drive through the one of those automatic car washes. When you get to the end, where the dryer is blowing, your Check Engine light starts flashing!

You fear the worst, but within a block or two, the light stops flashing, but stays on. By the next day, the light is off.

You wonder; "What was going on?" Well, it's actually a good lesson in how the Check Engine light works.

Your air intake system has a sensor that measures how much air is coming through it. When you went under the high-speed dryer, all that air was blasting past the sensor. Your engine computer was saying, there shouldn't be that much air when the engine is just idling. Something's wrong. Whatever's wrong could cause some serious engine damage.

Warning, warning! It flashes the Check Engine light to alert you to take immediate action.

It stopped flashing because once you were out from under the dryer, the airflow returned to normal. Now the engine control computer says the danger is past, but I'm still concerned, I'll keep this light on for now.

Then the Check Engine light goes off in a day or two.

The condition never did recur, so the computer says whatever it was, it's gone now. The danger is past, I'll turn that light off.

Now a flashing Check Engine light is serious. You need to get it into Car Doc On The Island as soon as possible. But if it stops flashing you can wait a few days, so you have time to see if the problem will clear itself or if you need to get it checked. How does the computer know when to clear itself?

Think of it this way. The engine control computer is the brain that can make adjustments to manage the engine. Things like alter the air-to- fuel mix, spark advance and so on. The computer relies on a series of sensors to get the information it needs to make decisions on what to do.

The computer knows what readings are in a normal range for various conditions. Get out of range, and it logs a trouble code and lights up the Check Engine warning.

The computer will then try to make adjustments if it can. If the computer can't compensate for the problem, the Check Engine light stays on.

The computer logs a trouble code. Some people think the code will tell the technician exactly what's wrong.

Actually, the code will tell the technician what sensor reading is out of parameters. It can't really tell him why, because there could be any number of causes.

Let's say you're feeling hot. You get your heat sensor out – a thermometer – put it under our tongue and in a minute or two you learn that you have a fever of 104 degrees F (40 degrees C).

You know your symptom – a fever – but you don't know what's causing it. Is it the flu, a sinus infection or appendicitis?

You need more information than just that one sensor reading. But it does give you a place to start and narrows down the possible problems.

There are reports on the internet telling you that you can just go down to an auto parts store and get them to read your trouble code or buy a cheap scan tool to do it yourself.

There are two problems with that. First, the computer stores some trouble codes in short term memory and some in permanent memory. Each manufacturer's computer stores generic trouble codes, but they also store codes that are specific to their brand.

A cheap, generic scan tool, like you can buy online or that the auto parts store uses, doesn't have the ability to retrieve long-term storage or manufacturer specific codes. Your Venice, FL, service center has spent a lot of money on high-end scan tools and software to do a deep retrieval of information from your engine control computer.

The second problem is that once you've got the information, do you know what to do with it? For example, a very common trouble code comes up when the reading on the oxygen sensor is out of whack.

So the common solution is for the auto parts store to sell you a new oxygen sensor — which is not cheap — and send you off on your way. Now your oxygen sensor may indeed have been bad and needed replacing. But the error code could have come from any of a dozen of other problems.

How do you know the right solution? Back to the fever analogy, do you need surgery or an aspirin? Leave it to the pros at Car Doc On The Island. Give us a call and let us help you resolve your check engine light issue.

Car Doc On The Island
419 South Tamiami Trail
Venice, FL 34285
(941) 786-1595
www.cardocontheisland.com

Upgrade Shocks for Better Handling in Venice

Many Venice drivers probably don't think of their shock absorbers as an important safety system; but that's just what shocks and struts are. They're all about ride control – keeping your vehicle tires in contact with the road and managing body motion.

Every time you hit a bump or pothole on a Venice road, your tire wants to bounce up. The bigger the bump, the higher the bounce. Your shocks or struts push down on the tire to maintain the traction you need to start, stop and turn.

If you've ever ridden in a vehicle with bad shocks, you know how it wallows on corners. The front end dives when you hit the brakes and the rear end squats when you accelerate. It's not only uncomfortable, it is difficult to handle.

You may have heard vehicles described as having “flat cornering." That means that when you take a corner, the body doesn't roll very much. When shocks start to get worn, your vehicle will roll more on corners. The weight of your vehicle's body shifts and tosses your vehicle to the outside of the turn, making it harder to control.

With good shocks, you can turn corners with confidence. When the shocks are bad, the body rolls too much and you need to slow down to maintain the same level of control. When you have to combine brake dive with body roll, you can quickly end up with an unsafe handling situation.

Shocks can break or start to leak, but they usually just wear out. After all, your vehicle shocks will move up and down over 75 million times in 50,000 miles/80,000 km. If you replace shocks at Car Doc On The Island in Venice, it will restore your vehicle's original ride control and quality. You can even upgrade shocks and struts if you want better handling or towing capacity on FL roads.

Shocks are an important safety system: don't wait until they are completely shot, perhaps risking your safety or damaging other suspension components. At Car Doc On The Island we can help you with quality shocks and struts as advised in your owner's manual, usually at around 50,000 miles/80,000 km, for a comfortable, safe handling ride in Venice.

Give us a call.

Car Doc On The Island
419 South Tamiami Trail
Venice, FL 34285
(941) 786-1595
www.cardocontheisland.com

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.