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Pueblo East - 2205 E. 4th St. (719) 542-0458

 

Watching Your Check Engine Light

Did you know that most of the cars driving around Oklahoma City, Oklahoma, carry more computer power than the Apollo 121 Lunar Module that landed on the moon in 1969?

New cars sold in the Oklahoma City area have as many as 12 networked computers and over five miles (eight kilometers) of wiring. In fact, for the last decade or so, auto computers have been controlling about 85 percent of your vehicle's functions.

Cars have sensors for manifold air temperature, coolant temperature, manifold air pressure, airflow, throttle position, vehicle speed and oxygen content. All of this electronic wizardry is pretty complicated. So how do Oklahoma City drivers know when there is a problem?

It's simple; the Check Engine light comes on. The computer monitors all the sensors and uses that information to decide what to adjust such as the fuel mix, spark timing and idle speed. In addition, the computer monitors its own circuits. When it finds a fault, it turns on the Check Engine light and stores a trouble code in the computer.

It can be pretty disturbing for Oklahoma City drivers when the Check Engine light comes on. We wonder just how urgent it is. Generally speaking, it is not critical like a temperature or oil pressure light. When you get one of those it means STOP NOW! When the Check Engine light shows up, you should come in to Car Doctor in Oklahoma City to find out what the matter is as soon as possible.

Since 1996, there has been a strong emissions control component to the Check Engine diagnostic. But if your Check Engine light flashes on and off, you know that it is more urgent and you need to get it checked immediately to prevent damage. You should slow down and avoid towing or heavy loads until you can get it checked out.

Your friendly and knowledgeable technicians at Car Doctor have special diagnostic equipment that will retrieve the trouble code from the computer and help him determine what is wrong. From there, we can fix it and get you back on the road.

Stop by if you're Check Engine light is on.

Car Doctor
1217 N.W. 5th St
Oklahoma City, Oklahoma 73106
405-232-1949
http://mdcar.net

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Dashboard's a Funny Name (Instrumental Panel Warning Lights)

Every day you drive, you're sitting behind the dashboard. But how in the world did it get that name? Back in the days of the horse-drawn carriage, horses would kick up dirt and mud on the driver and passengers, "dashing" debris against the carriage. So those who built carriages began installing a board to protect them. So, dash-board. Dashboard.

The dashboard is still there, though changed quite a bit from the early days. Now its main purpose is to house the controls and instruments for your vehicle's systems.

Of course, you have the speedometer, tachometer and gas gauge. But there are four warning lights you need to pay attention to on your dashboard and instrument panel. Some of these may even be gauges, depending on your model of vehicle. Regardless, paying attention to them is a good idea if you want your vehicle to keep going as long as possible.

Oil pressure—The oil pressure light will come on if your engine doesn't have enough pressure in its system. Low oil pressure means engine parts aren't getting lubricated properly. This can cause really serious damage and do it quickly. If your oil light goes on, call your Car Doctor service advisor immediately if you can. Even driving a short distance may ruin your engine.

Check Engine light—If a light that looks like an engine comes on, it's not necessarily signaling a catastrophe. But it means one or more sensors in your vehicle have detected an abnormal situation. Have your vehicle checked soon. There will be a code stored in your vehicle that a technician can read and use it as an extra clue as to what's going on.

Brake light—If this lights up, first check if your parking brake is on. If it isn't, you could have serious brake issues. It's a sign you should get the brakes checked soon at Car Doctor.

Tire pressure—Tire pressure monitors are built in to newer vehicles. They let you know if any of your tires are over or underinflated. Both conditions need to be checked out. That could prevent a blowout or premature tire wear.

The dashboard isn't what it used to be. In fact, it's much better now… and much more informative. Take advantage of that information and keep your vehicle running the way it's meant to.

Car Doctor
1217 N.W. 5th St
Oklahoma City, Oklahoma 73106
405-232-1949
http://mdcar.net

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How Your Check Engine Light Works



Have you ever had an experience like this in Oklahoma City, Oklahoma? 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 Doctor 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 Oklahoma City, Oklahoma, 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 Doctor. Give us a call and let us help you resolve your check engine light issue.

Car Doctor
1217 N.W. 5th St
Oklahoma City, Oklahoma 73106
405-232-1949
http://mdcar.net

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Car Doctor Towing is a pillar of the community and a leader in providing 24-hour towing in Pueblo, Colorado and surrounding areas. Our goal is to focus on customer service. It is the foundation of our business. Car Doctor Towing employs a well-trained staff specializing in light-duty towing service. If your vehicle is inoperable or unsafe to drive, contact us day or night for 24/7 towing. We're ready to assist you! Call now!

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