Why is the check engine light on?


Why is the check engine light on?There are many ways that your vehicle may inform you of a problem, such as weird smells, vibrations or odd noises. However, one of the most obvious signs of trouble is if the check engine light comes on. While many people worry that this light indicates a massive failure, it often represents something relatively small. As long as it is addressed in a reasonable amount of time you won't have to worry about extensive repairs and expensive bill. But if you wait, you could end up with a big problem, such as the first in this list of common check engine light issues.

Failed catalytic converter

The catalytic converter is tasked with converting hazardous exhaust fumes into less harmful emissions. If it is not doing its job properly it will need to be replaced. This is unfortunately one of the most expensive parts to replace on any car or truck. However, it won't fail unless some other problem occurs first, such as a failed sensor, which would have triggered the check engine light long ago.

Malfunctioning MAF sensor

The mass air flow sensor is located in the front of the vehicle. It measures incoming air to calculate how much needs to be mixed with the gas for a proper running engine. If the sensor fails it will result in too much gasoline being used, which increases emissions and damages the catalytic converter.

Failed O2 sensor

The oxygen sensor is similar to the MAF sensor but it is located in the exhaust system. It measures oxygen in the exhaust to also help determine the proper air/fuel mix. If it malfunctions, or if there is an exhaust leak, again, too much gasoline will be used, thus lowering fuel economy and damaging the catalytic converter.

Misfiring

Misfiring is an issue you will likely notice with or without the check engine light. It means that one or more cylinders is not firing at the appropriate time. This will cause a rough idle and possibly stalling. Common causes include worn spark plugs or failed ignition coils.

Loose gas cap

Your best hope if the check engine light comes on is that you simply forgot to tighten the gas cap the last time you filled up. A loose or broken gas cap will allow fuel vapors to escape from the filler hose, meaning you're losing gas you didn't even get a chance to use.

If the check engine light comes on do not put off diagnostics. For professional check engine light repair in Mills, Casper or the surrounding Wyoming communities be sure to visit Chuck's Auto Repair Service. Our expert auto repair techs will get the issues figured out and repaired quickly and effectively. Give us a call at (307) 265-0209 to request more information or to schedule superior auto repair in Mills.


Chucks Auto Repair Blog

Written and Published By MORBiZ



Common Symptoms of Engine Trouble that We Can Fix at Our Mills, WY Auto Shop
Important Winter Maintenance Tasks We Can Complete at Our Mills, WY Auto Shop
Signs that Your Car Needs Transmission Service Now
What are common signs of cooling system failure?
Auto Maintenance to Get Ready for a Summertime Road Trip
Is my alternator bad?
What are warning signs of suspension trouble?
6 Ways that Oil Changes Keep Your Engine Healthy
7 Warning Signs of Failing Brakes
Transmission Specialist in Mills, WY
Tips for Driving Safely during the Wintertime
7 Winter Auto Maintenance Tasks for Better Safety
What car problems trigger the check engine light?
Simple Tips to Boost MPGs
What are common signs of a transmission issue?
Auto Maintenance Tasks to Achieve Optimal Performance
Expert Auto Repair in Mills, WY
What are common symptoms of alternator trouble?
How do I know if my Car Needs New Shocks or Struts
Common Auto Electric Problems
Signs it is Time for a Tune Up
Top Signs of Brake Trouble
What's Leaking From My Car?
Does My Car Need Cooling System Repair?
10 Tips for Safer Winter Driving
Three Problems that Diagnosed by Noise
4 Tips for Enhanced Fuel Efficiency
Does My Car Really Need an Oil Change Every 3,000 Miles?
Strange Smells that Mean it is Time for Auto Repair
Top Signs of Major Engine Trouble
10 Problems that Decrease MPGs
Top General Symptoms of Car Trouble
What Causes a Rough Idle?
Customer Reviews of Chuck's Auto Repair Service in Mills, WY
Four Ways to Maintain a Safe and Reliable Car
Most Common Reasons Your Car Won't Start
Does My Car Have An Exhaust Leak?
Top Causes of a Rough Engine Idle
How Regular Auto Maintenance Can Save You Money?
Don't Put off Brake Repair!
Tips to Avoid Manual Transmission Damage
5 Sounds that Indicate a Need for Auto Repair
When Should I get a Tune Up?
Top Signs it is Time for Engine Repair
Winter Weather and Auto Maintenance
Top Three Signs Your Car Needs Power Steering Repair
3 Important Reasons to Never Skip Oil Changes
Why is the check engine light on?
4 Symptoms of Failing Suspension
Is it time for Cooling System or Radiator Repair?
Does Your Car Need Brake Repair? 5 Signs that Scream Yes!
5 Signs it is Time for Transmission Repair