One problem related to manifold/header/muffler/tail pipe has been reported for the 2006 Jeep Liberty. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2006 Jeep Liberty based on all problems reported for the 2006 Liberty.
Parked vehicle after driving 20 min. Going about 70mph. After turning the car off, the car started steaming. I popped the hood to find coolant and water overflowing from the coolant reservoir. I got the car towed to the local mechanic who after doing extensive diagnostics to find the leak within the system. Took the manifold off the engine and realized it was caused by bad/ cracked heads on the engine connecting to manifold. A lot of this type of engine has this problem, seen by the local auto mechanic in vail valley, colorado where Jeeps are common. This is a manufacturer problem.