My son and I are just finishing up an engine transplant into a '05 Liberty CRD. The vehicle had suffered a turbocharger failure which toasted the bottom end. We swapped in an engine from a junkyard with only about 50,000 miles on it and it purrs like a kitten so we're both really pleased so far except for one thing. It's got a CEL with one code:
P0403 EGR Solenoid Circuit (Excessive Current/Open Circuit)
The electrical connector is firmly plugged in so I don't think that's the problem so this is probably either a problem with the wiring to the ECU or a problem with the EGR solenoid itself. Does anyone out there know what resistance checks I can do on the solenoid to test it? The solenoid on the old engine may be fine so if it's a bad solenoid I could just swap the old one in. Is the solenoid integral to the valve or can I just swap in the other solenoid and leave the valve on the newer engine in place?
As good as the GDE tune is (I ran it for years on another Liberty that my wife totaled a couple of years ago), we just don't want to shell out $500 for it right now. We'll address EGR function to prevent intake fouling a different way. We just need the CEL to go away for inspection so we need the EGR system to be functional.