Can a Bad IAC Valve Drain the Battery? Symptoms, Idle Issues, and Solutions Explained
A bad Idle Air Control Valve (IACV) can drain the battery. If the IACV fails, it may cause a reverse current through the alternator, leading to parasitic battery drain. Symptoms include low engine idle speed and trouble starting. Other potential issues, like a faulty blower control module, may also contribute to battery problems. Common symptoms … Read more