By a Master Tech with 15+ Years Under the Hood Quick Answer: A failing ignition coil causes rough idle, misfires, poor fuel economy, and a flashing check-engine light. Swap the suspect coil to a different cylinder—if the misfire follows the coil, you’ve found the culprit. Expect $80-$180 for a single OEM coil versus $400-$700 at … Read more
If you’ve ever felt your car shudder, lose power unexpectedly, or idle like it’s about to stall, you may be dealing with a classic—and potentially serious—automotive issue: an engine misfire. As an ASE-certified master technician with over 15 years of hands-on experience diagnosing everything from weekend project cars to daily commuters, I’ve seen misfires cause … Read more
Opening: The Day the Engine Started Stuttering It was a sweltering July afternoon in the shop, the kind of heat that makes even the most seasoned mechanics slow down and grab an extra Gatorade. I was elbow-deep in a Toyota Camry’s timing cover when my service writer, Jake, walked in with that look—the one that … Read more
By a Certified ASE Master Technician with 15+ Years Shop Experience It was a Tuesday morning, and the temperature had just dropped to 28°F overnight—the kind of cold that makes cars angry. A woman in a 2015 Honda Accord pulled into my bay with that unmistakable look of panic. “The check engine light came on … Read more
How to Read and Clear Check Engine Light Codes: A Master Technician’s Complete Guide Last Updated: December 2025 | Written by ASE-Certified Master Technician It was a Tuesday morning in late October, the kind where the first frost coats the windshields and customers flood the shop with cold-weather complaints. A woman pulled up in a … Read more