Removing the EGR valve from the 2.8-litre diesel engine in a Jeep Liberty can be time-consuming. Fortunately, with a little effort and a lot of patience, you can do it yourself and save on an otherwise large repair bill. The EGR valve is located on the back of the engine, just below the intake manifold on the driver's side of the engine. The valve bolts in place with four 8-millimeter bolts that are hidden below the manifold, so you will not be able to see them.
Open the bonnet of your Jeep and locate the negative battery cable on the battery. Loosen the pinch bolt with a wrench then lift the cable off the battery and set it aside.
Position a catch basin under the passenger's side of the radiator and remove the petcock from the radiator tank, allowing the coolant to drain from the system. Once the coolant has stopped draining, replace the petcock.
Remove the bolts from the top of the engine cover on the engine, using a socket and ratchet. Lift the cover off the engine and set it aside.
Locate the EGR valve on the back of the engine near the driver's side head. Remove the clamps from the cooling lines on the EGR valve then pull the two coolant lines off the valve.
Remove the four 8-millimeter bolts from the EGR valve with a wrench then separate the valve from the engine block. A ratcheting wrench may be necessary to remove the 8-millimeter bolts.