Back to all

Watching Your Check Engine Light

June 3, 2015



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

New cars sold in the Troy area have as many as twelve 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 Troy motorists 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 Troy car owners 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 Tuffy Tire & Auto Service Center Troy in Troy 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 Tuffy Tire & Auto Service Center Troy service professional has 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.

Tuffy Tire & Auto Service Center Troy
530 E Maple Rd
Troy, Michigan 48083
248-585-2770

More articles from Tuffy Troy Auto Repair

The Turn Signal Mystery (Turn Signal Problems)

March 30, 2025

Some problems are easy to diagnose on a vehicle; others aren't. Figuring out what's wrong with a malfunctioning turn signal sometimes fits into both categories. By the way, if your tempted to just leave your broken blinker broken, remember you can get a ticket for not using them, not to mention... More

The Byte Stuff (Your Vehicle's Computers)

March 23, 2025

Nobody has to tell you that computers are a part of so many things in our lives. Smartphones, kitchen appliances, vacuum cleaners, televisions. You name itit has a computer in it. And your vehicle is no exception. The earliest cars relied on the technology of their time, and there was no such ... More

Stuck! (Vehicle Door Issues)

March 16, 2025

This may have happened to you. You drive somewhere and get out of your vehicle only to try closing the door and it just won't stay closed! What a helpless feeling. You can't lock it; you can't leave it like it is. Or, let's say you head down to your vehicle to head out to work in the morning a... More