Shop Engine Shutdown components for your 2005-2006 Jeep Liberty 2.8L CRD to avoid diesel engine runaway. Emergency shutdown systems can be required in vehicles used in industries like mining, oil refinery, forestry, mobile welding, septic removal, and refueling. Emergency shutdown systems are intended to cut the air intake supply in order to safely shut down the engine. Find Engine Shutdown products at XDP from brands such as Pacbrake and BD-Power.