Totaly agree with Wolverine here...check the boost hoses for tears,rips etc.
Also the hose from Airbox to Turbo tends to tear.
Cam sensor and crank sensor problems tend to grind you to a complete halt.
The 2006 LHD CRD has a known problem of the Fuel filter head mounting bracket can pinch the harness behind it and cause shorts to chassis but start with the hoses first.
Best thing is to place your questions in the "Liberty CRD Love the Torque" section further down where there are a lot of experts on the CRD to solve your problems.....read the NOOB section first!