5.6K views · 97 reactions | Car Engine Revving Up and Down? How to Diagnose Engine Surge! Is your car or trucks engine revving up and down? That's called engine surge, and Sue is going to show you what you can do about it! In this video, Sue shows you how you can do an easy diagnostic without any special tools, to determine if the idle air control (IAC) valve in your car or truck is acting up! | 1A Auto Parts | Facebook

NEW VIDEO! Is your car or trucks engine revving up and down? That's called engine surge, and Sue is going to show you what you can do about it! Check out more videos on our YouTube Channel: http://1aau.to/m/youtube Shop High Quality Parts: http://1aau.to/m/ShopParts | 1A Auto Parts