It’s certainly an interesting point. The EGR valve, being part of the emissions system, often gets scrutinized because when it malfunctions, it can significantly affect engine performance and emissions. However, you’re right-an issue attributed to the EGR system doesn’t always mean the valve itself is faulty. Many problems initially blamed on the EGR can be traced back to dirty passages, clogged sensors, or even incorrect diagnostics due to outdated scan tools.
It’s vital to perform a comprehensive diagnostic, including checking the EGR solenoid, vacuum lines, and even the ECU parameters related to EGR function, before jumping to replacement. A smoke test to find leaks or using a multimeter to check electrical connections could uncover underlying issues. Perhaps shining more light on these particular areas and encouraging mechanics to deepen their diagnostic approach would shine a light on excess replacement concerns. Has anyone else found success with a specific diagnostic tool or method?