Reset the ECU. Go someplace else to have the code read and make sure that it's coming up as something specfic, not just "Fuel System" or something. If you installed a new valve and it still comes up as a bad valve, replace it with a KNOWN good one and try again. If you still get a bad valve code, buy a manual and a multimeter and go step by step per the manual and work back from the EGR plug.
Sunday, May 13th, 2007 AT 9:49 PM