Car wiring diagrams: Bmw X5 Vacuum Diagram, wiring diagram, wire wiring harness, schematic circuit diagram, wiring diagran, wireing diagram, wirring diagram, wiring daigram, wiring diagrams. Rough or hunting idle? Stalling? Sputtering? These are all symptoms of poor fuel delivery or a vacuum leak in your intake system. The idle control valve is one of the .Auto Parts Warehouse has the largest selection of BMW X car parts and accessories for sale online. Lowest Price Guarantee on all products. Shop now!.Shop from the world's largest selection and best deals for BMW X Complete Engines. Shop with confidence on eBay!.