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Sensor Troubleshooting: Idle Air Control Valve

By: · August 17, 2009

As we’ve mentioned in other articles, many of us freak out when the Check Engine/Service Engine Soon light illuminates on our car’s instrument panel. Most people don’t realize that many computer-recognized problems are faulty emissions-system sensors. You don’t have to be a professional mechanic or have a degree in electrical engineering to diagnose and fix sensor problems, especially in older vehicles (i.e., ones that have outgrown their warranties). One component that falls into this category is the Idle Air Control (IAC) valve…


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