What to Do When Your Check Engine Light Is On and How Coleman Taylor Transmissions Can Help
- Mary Rabalais
- Jul 2
- 3 min read
We've all experienced the unsettling moment when the check engine light suddenly lights up on our vehicle dashboard. We panic! Rather than worrying, remember that this light is your vehicle's way of signaling that something is probably off with your vehicle. In this blog post, we will outline practical steps to take when that light comes on and explain how Coleman Taylor Transmission in St. Peters, MO, is prepared to assist you with a free inspection!
Understanding the Check Engine Light
The check engine light, or malfunction indicator lamp (MIL), can signify a variety of issues, ranging from minor inconveniences to significant repairs. For instance, it could indicate something as simple as a loose gas cap, which accounts for about 30% of trigger cases, or it might point to more serious issues like engine misalignment or catalytic converter failure. Disregarding the check engine light might result in expensive repairs down the line, so prompt action is crucial.
Step 1: Remain Calm and Analyze the Situation
When the check engine light turns on, panic may be your first reaction. However, staying calm is crucial. Pay attention to whether the light is steady or blinking. What does the blinking or steady light mean on your check engine light display? A blinking light often means a severe problem, like an engine misfire, which necessitates immediate attention. If the light is steady, keep an eye on how your car feels. Is there unusual noise? Does it respond differently when you press the accelerator?
For example, if your car struggles to speed up, it could indicate a larger problem needing professional evaluation, while gentle sounds that weren’t there before might just mean a routine maintenance check.
Step 2: Check for Obvious Issues
Before heading to your mechanic, do a quick self-assessment.
Gas Cap: A loose or cracked gas cap can lead to fuel pressure issues, triggering the check engine light. This is a very common and easy fix as anyone can do this! If you find that the cap is indeed loose, securing it might be all you need to do to resolve the issue.
Fluid Leaks: Inspect for any puddles or moisture under your car. Look especially for oil, coolant, or transmission fluid. For instance, coolant leaks can lead to overheating, which is a significant risk if not addressed.
Taking just a few moments to check these basics can save you time and hassle.
Step 3: Consider Your Driving Habits
Pay attention to your driving experience. Have you noticed changes in performance like reduced fuel efficiency—often as much as 15% decrease—or a sluggish response when accelerating? Such signs could indicate underlying issues worth investigating further. If you notice persistent problems, scheduling a diagnostic test to assess the vehicle's health may prevent bigger problems from developing.
Step 4: Visit Coleman Taylor Transmission for a Free Diagnosis
Coleman Taylor Transmission stands out in this scenario! We provide a free diagnostic service in St. Peters, MO, making it easy for you to understand the root cause of your check engine light. Their skilled technicians will conduct thorough testing on your vehicle to pinpoint issues accurately.
Whether your check engine light is on constantly or is blinking erratically, our experienced team of ASE-certified technicians is ready to identify any concerns quickly, giving you peace of mind.

Step 5: Take Action Based on Diagnosis
After your visit to Coleman Taylor Transmission, you will gain clarity on what’s causing your check engine light to remain on.
Plan for Repairs: Based on your diagnosis, plan for necessary repairs. Knowing what you’re up against helps you budget accordingly.
Regular Maintenance: To avoid the check engine light from appearing unexpectedly, regular vehicle maintenance is key. Routine oil changes, air filter replacements, and scheduled checks can help keep your vehicle in excellent shape, prolonging its life and improving the performance of your vehicle.
Final Thoughts
Seeing your check engine light turn on can be alarming, but remaining calm and proactive can help manage the situation effectively. Check essential items like your gas cap, closely observe your vehicle’s performance, and remember that Coleman Taylor Transmissions in St. Peters MO is there to help. Our free diagnostic services put you on the right path to resolving any underlying issues swiftly. Visit us today at 4131 N St Peters Pkwy, St Peters, MO 63304.
We are proud to maintain our A+ rating with the BBB.
Understanding what’s happening under your vehicle’s hood not only protects you from major repairs but can also lead to better performance and less stress. Embrace this opportunity to keep your vehicle in top condition, and it will reward you with a smoother ride. Safe travels!
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