Check Engine Light Flashing, Car Quaking A Comprehensive Troubleshooting Guide

87.4M posts. Discover videos related to Why Is My Car Shaking and Check Engine Light Blinking on TikTok. See more videos about Why Is My Check Engine Light ... When the check engine light blinks - that's bad. Means you have a critical issue with the motor. My guess is it could be a spark plug pack going bad. It might be the winter gas and the fuel trims are adjusting. You also could have a bad tank of gas with lots of ethanol. The mileage is close to ... If a spark plug is faulty, it can cause a misfire, which can lead to a flashing check engine light and shaking car. 2. Check the ignition coils. I took it to a shop, and after a diagnostic check, they noticed that I was missing on one cylinder. They said that getting new plugs and a ... Flashing CEL often means one or more cylinders are misfiring. I'd go to Autozone/Advance auto and they can pull the exact codes for you for free. Blinking check engine light is telling you there is an active misfire, This is very bad for the catalysts and will cause them to fail. The Check Engine light only can flash for a misfire. You have misfire. That's an engine problem, not a transmission problem. Thank you. Jul 6, ... This light comes on during a malfunction in one of two ways: Light Flashing: A misfire condition has been detected. A misfire increases vehicle emissions. The shaking is most likely caused by a cylinder misfiring. When the check engine light flashes, the misfiring is happening at that moment. The ...