About to give up
I have a 2005 Jeep Liberty CRD with the following problem. Very little power from statup with moderate black smoke. Have to takeoff with OD off and when I reach 2000 RPM it catches on and runs normal until I go below 2000 RPM then I have a loss of power and some smoke. Have had it to two dealers to no avail. I have replaced the sensors MAF @ MAP. Replaced the hose from the airbox to turbo. Replaced the boost hoses with Samco hoses. I believe one dealer replaced the EGR or at least charged me for it. I am now considering a GTE tune. Otherwise the car has been great for the first 120000miles with no problems. Also did timing belt done at 100000 miles as preventative maintance. Would appreciate any input I can receive regarding my situation.