Chevrolet Classic check engine light blinking issue with mass airflow sensor replacement and acceleration problems on Chevrolet Classic

Submitted by Vehicle Owner · Jun 23, 2025
Published by RepairPal

Problem overview

Some Chevrolet Classic owners report experiencing a blinking check engine light after replacing the mass airflow sensor, which may indicate a serious engine issue such as a misfire. This problem could stem from improper installation of the sensor or other underlying engine issues. Additionally, these owners often encounter acceleration problems that may be linked to the mass airflow sensor replacement, as this sensor is vital for measuring air intake and influencing fuel delivery. Commonly, issues with the check engine light arise post-replacement if the installation was not executed correctly or if there are existing electrical problems. To troubleshoot these issues, owners are advised to use a diagnostic scanner, inspect engine hoses and connectors for leaks, and check for vacuum leaks. Furthermore, other factors like faulty oxygen sensors or catalytic converter problems can also trigger the check engine light. If the light continues to blink, possible solutions include ensuring the sensor is installed correctly, resetting the ECU, and checking for clogged air filters or intake manifold gasket leaks.

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