Why is the Check Engine Light On?
Your vehicle will inform you of problems in many ways. You may experience strange noises, notice large plumes of exhaust smoke or feel weird vibrations. Each of these sorts of things are symptoms of trouble that indicate you need to get to the auto repair shop right away. However, a more common way of figuring out that there is trouble brewing is the check engine light. While many people are scared of this little light, it should not be feared. It is giving you fair warning about what is likely a relatively small problem within your vehicle. However, if the light is ignored the problem will grow, resulting in a much bigger repair and a more expensive bill. As soon as the light comes on be sure to head to your mechanic for proper check engine light diagnostics.
Faulty Catalytic Converter
There is a reason it is important to have diagnostics done as soon as possible following the illumination of the light. If you don't that small problem will get much worse, and it could result in the failure of the catalytic converter, once of the most expensive parts of a vehicle. It can cost upwards of $1,000 to replace, but it likely isn't what trigger the light. That small problem could have been dealt with for as little as $100. Never delay getting diagnostics ran.
Bad MAF Sensor
The mass airflow sensor measures incoming air and calculates how much of it needs to be mixed with the gasoline for the proper air/fuel mixture. If it is unable to properly do so it will likely result in the burning of excessive amounts of gasoline, which will cause the light to come on.
Bad Oxygen Sensor
On the other end of the vehicle, the oxygen sensor measures oxygen in the exhaust, which also helps dictate the air/fuel mixture. Again, if the sensor malfunction it will probably result in the use of too much gas.
Malfunctioning Spark Plugs
If the spark plugs aren't firing on time, due to corrosion or dirt or other wear and tear, the engine will begin to run very rough and waste copious amounts of gas. This will quickly trigger the check engine light.
Cracked or Loose Gas Cap
It is important to ensure you tighten the gas cap every time you leave the pump, as leaving it loose could cause the light to come on because fuel vapors will evaporate through the filler hose. A broken or cracked gas cap will result in this as well.
When the check engine light comes on make an appointment with your mechanic to find out what the problem is. If you need check engine light diagnostics in Morrisville get in touch with John's Service Center. We will hook your car up to modern diagnostic equipment to ensure a fast and accurate repair. Give us a call at (215) 710-1340 to request an appointment for auto maintenance or auto repair in Morrisville today!
John's Service Center Blog
Written By Brian Corey
Published By MORBiZ
The Best Morrisville Brake Repair
Engine Diagnostics in Morrisville
Auto Repair with Shuttle Service
Engine Repair in Morrisville
Factory Scheduled Maintenance
Fast, Expert Auto Electric Repair
Morrisville AC Service
Don't Ignore the Check Engine Light
Transmission Replacement in Morrisville, PA
The Importance of Tire Services in the Winter
Engine Replacement in Morrisville
Don't Delay Brake Repair!
Where to Go When You Need Transmission Repair
How to Find the Best Auto Electric Repair
Quality Engine Diagnostics & Repair
Pre-Purchase Inspections: We Can Help
When You Need Foreign Auto Repair
Is It Time for AC Service?
Let Us Help You Get Great Domestic Auto Repair
Things to Know About Tire Services
How to Recognize if You Need Brake Repair
The Importance of State Inspections
Your Day Doesn't Have to Stop When There's a Shuttle Available
Computer Aided Engine Diagnostics - How it Works
How to Find a Great Auto Repair Shop in Morrisville
Why is the Check Engine Light On?
4 Signs you Need Radiator Repair
5 Common Signs of Transmission Trouble
What is Suspension and Does My Car Need Suspension Repair
Trouble Ahead: 4 Signs of Starter Motor Failure
5 Need to Know Signs of Brake Trouble
6 Important Maintenance Tips to Increase your Fuel Efficiency